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Sample records for energikrav byggesystem lette

  1. Comment on: “Quantum exam” [Phys. Lett. A 350 (2006) 174

    NASA Astrophysics Data System (ADS)

    Song, Jie; Zhang, Shou

    2007-01-01

    In the Letter [B.A. Nguyen, Phys. Lett. A 350 (2006) 174], a quantum exam protocol was presented. Here we show a cheating protocol, by which any student can get the other students' solution without being detected. Then we propose a possible modified protocol against this attacking strategy.

  2. Comment on 'Thermodynamic cycles and the calculation of p Ka' [Chem. Phys. Lett. 367 (2003) 145

    NASA Astrophysics Data System (ADS)

    da Silva, Clarissa O.; da Silva, Edilson C.; Nascimento, Marco A. C.

    2003-11-01

    In a recent Letter, Pliego [Chem. Phys. Lett. 367 (2003) 145] has raised some questions about the methodology that we have employed for calculating p Ka values in aqueous solutions. In this comment we show that the problem with Pliego's analysis is the fact that he used Ben-Naim's definition of Δ Gsol for both the solute and the solvent, which implies that the concentration, for both components, should be equal to 1 M. For the solute, this is a reference state fully compatible with the quantum description, but for the solvent this choice is unphysical, as discussed in the Letter.

  3. Comment on “Deterministic six states protocol for quantum communication” [Phys. Lett. A 358 (2006) 85

    NASA Astrophysics Data System (ADS)

    El-Orany, Faisal A. A.

    2010-02-01

    In [J.S. Shaari, M. Lucamarini, M.R.B. Wahiddin, Phys. Lett. A 358 (2006) 85] the deterministic six states protocol (6DP) for quantum communication has been developed. This protocol is based on three mutually unbiased bases and four encoding operators. Information is transmitted between the users via two qubits from different bases. Three attacks have been studied; namely intercept-resend attack (IRA), double-CNOT attack (2CNOTA) and quantum man-in-the-middle attack. In this Letter, we show that the IRA and 2CNOTA are not properly addressed. For instance, we show that the probability of detecting Eve in the control mode of the IRA is 70% instead of 50% in the previous study. Moreover, in the 2CNOTA, Eve can only obtain 50% of the data not all of it as argued earlier.

  4. Comment on ``Three-dimensional photonic-crystal emitter for thermal photovoltaic power generation'' [Appl. Phys. Lett. 83, 380 (2003)

    NASA Astrophysics Data System (ADS)

    Trupke, Thorsten; Würfel, Peter; Green, Martin A.

    2004-03-01

    In a recent article, Lin et al. [Appl. Phys. Lett. 83, 380 (2003)] reported on the light-emitting properties of three-dimensional tungsten photonic crystals and their potential applications as improved thermal emitters in thermophotovoltaic (TPV) systems. Their findings have attracted considerable interest throughout the media and the application of this type of materials has been praised as a potential superior future energy source; e.g., in waste heat-driven electrical generators (http://www.photonics.com). The results of the theoretical modeling in the work of Lin et al. suggest that a TPV system can achieve higher heat to electric energy conversion efficiencies in combination with a three-dimensional tungsten photonic crystal than with any conventional selective thermal emitter. These theoretical results are based on the experimental observation that the photonic crystal, when heated to a given temperature, emits more radiation in certain spectral regimes than a black body of the same temperature. This experimental observation shall briefly be discussed here.

  5. Comment on: “From classical to modern ether-drift experiments: the narrow window for a preferred frame” [Phys. Lett. A 333 (2004) 355

    NASA Astrophysics Data System (ADS)

    Guerra, Vasco; de Abreu, Rodrigo

    2007-02-01

    In a recent article [M. Consoli, E. Costanzo, Phys. Lett. A 333 (2004) 355], M. Consoli and E. Costanzo have investigated classical and modern aether drift experiments and explored the narrow window for detection of a preferred reference frame. This Letter proposes an easy to perform variant of Fizeau's experiment, which may confirm or deny Consoli Costanzo's claims.

  6. Comment on “Scaling behavior of one-dimensional Pt chains migration on Pt(110)-(1×2) surface”. [Phys. Lett. A 268 (2000) 413

    NASA Astrophysics Data System (ADS)

    Montalenti, F.; Ferrando, R.

    2000-11-01

    We show that the recently proposed scaling laws [see G. Zhuang, W. Wang, Phys. Lett. A 268 (2000) 413] for chain diffusion on missing-row Pt(110) have no real meaning, since they cannot be extended outside the narrow chain-length range which has been considered by Zhuang and Wang. The only asymptotic scaling law gives a chain mobility which is inversely proportional to the chain length; however this asymptotic scaling behaviour is not physically important due to the occurrence of multiple upward promotions for long chains.

  7. Comment on ‘To stack or not to stack: Performance of a new density functional for the uracil and thymine dimers’ [Chem. Phys. Lett. 459 (2008) 164

    NASA Astrophysics Data System (ADS)

    van Mourik, Tanja

    2009-04-01

    A Letter by Gu et al. [J. Gu, J. Wang, J. Leszczynski, Y. Xie, H.F. Schaefer III, Chem. Phys. Lett. 459 (2008) 164] presented MP2/6-31+G(d) and MP2/TZVPP stacking energies for the uracil and thymine dimers, with the aim to assess the performance of the new M06-2X density functional. However, the stacking energies were not corrected for the basis set superposition error (BSSE). Here we show that correction for this error dramatically changes the results. BSSE correction severely reduces the stacking energy of the thymine dimer, whereas the stacked uracil dimer structure considered by Gu et al. is not even a minimum on the MP2/6-31+G(d) potential energy surface.

  8. Erratum to "Multi-modal fission in collinear ternary cluster decay of 252Cf(sf,fff)" [Phys. Lett. B 746 (2015) 223

    NASA Astrophysics Data System (ADS)

    von Oertzen, W.; Nasirov, A. K.; Tashkodjaev, R. B.

    2016-11-01

    The scale of the ordinate axis of Fig. 4 on page 226 of PLB 746 (2015) 223 was incorrect. The new version of Fig. 4 (which is "Fig. 1" in the present note) with the correct ordinate axis is given here (upper part). The lower part shows the previous version. Five potential wells and barriers are shown. Considering a sequential process two barriers are relevant for the decay, with equal barriers for the symmetric cases with a smaller fragment at the center (in these cases only one barrier is shown). For the asymmetric case of 70Ni + 50Ca + 132Sn, two different barriers appear, denoted as (B1) and (B2), which correspond to the interactions of the middle cluster 50Ca with the outer nuclei 70Ni and 132Sn, respectively. In a sequential mechanism the separation of 132Sn from the other part via the barrier B2 having the smaller height, is favoured for the first step. For the second step the barrier (B1) between Ni and Ca, appears at smaller distances (dot-dashed curve) and is higher. The order of the barriers of the five channels is unchanged, compared to the figure in Ref. W. von Oertzen et al., Phys. Lett. B 746 (2015) 223.

  9. Corrigendum to "Multi-modal Fission in Collinear Ternary Cluster decay of 252Cf(sf,fff)" [Phys. Lett. B 746 (2015) 223

    NASA Astrophysics Data System (ADS)

    von Oertzen, W.; Nasirov, A. K.; Tashkodjaev, R. B.

    2017-02-01

    The scale of the ordinate axis of Fig. 4 on page 226 of PLB 746 (2015) 223 was incorrect. The new version of Fig. 4 (which is "Fig. 1" in the present note) with the correct ordinate axis is given here (upper part). The lower part shows the previous version. Five potential wells and barriers are shown. Considering a sequential process, two barriers are relevant for the sequential decay, with equal barriers for the symmetric cases with a smaller fragment at the center (in these cases only one barrier is shown). For the asymmetric case of 70Ni + 50Ca + 132Sn, two different barriers appear, denoted as (B1) and (B2), which correspond to the interactions of the middle cluster 50Ca with the outer nuclei 70Ni and 132Sn, respectively. In a sequential mechanism the separation of 132Sn from the other part via the barrier B2 has the smaller height, thus it is favored for the first step. For the second step the barrier (B1) between Ni and Ca, appears at smaller distances (dot-dashed curve) and is higher. The order of the barriers of the five channels is unchanged, compared to the figure in Ref. W. von Oertzen et al., Phys. Lett. B 746 (2015) 223.

  10. Discussion of “Geomechanical modeling of the nucleation process of Australia's 1989 M5.6 Newcastle earthquake” by C.D. Klose [Earth Planet. Sci. Lett. 256 (2007) 547 553

    NASA Astrophysics Data System (ADS)

    Quinn, C. D.; Glen, R. A.; Diessel, C. F. K.

    2008-05-01

    On the basis of a numerical simulation, Klose [Earth Planet. Sci. Lett. 256: 547-553 (2007)] proposed that the MW = 5.2-5.6 earthquake that nucleated beneath Newcastle (New South Wales, Australia) at 10.30 AM December 28, 1989 (AEST), was the result of 200yr of coal mining in the region. We argue here that Klose's [Earth Planet. Sci. Lett. 256: 547-553 (2007)] ultimate conclusion is not supported by his own model or by available geological and seismic data. In particular, the 1989 Newcastle earthquake was not anomalous with respect to regional seismic activity.

  11. Comment on: “Effects of including the counterrotating term and virtual photons on the eigenfunctions and eigenvalues of a scalar photon collective emission theory” [Phys. Lett. A 372 (2008) 2514

    NASA Astrophysics Data System (ADS)

    Svidzinsky, Anatoly; Chang, Jun-Tao

    2008-08-01

    In a recent Letter [R. Friedberg, J.T. Manassah, Phys. Lett. A 372 (2008) 2514] Friedberg and Manassah argue that effect of virtual photons has serious consequences for large atomic samples. Here we show that such effect is negligible for evolution of a uniformly excited atomic state prepared by absorption of a single photon.

  12. Reply to the comment on `Pople versus Dunning basis-sets for group IA metal hydrides and some other second row hydrides: The case against a De Facto standard' by R.A. Klein and M.A. Zottola [Chem. Phys. Lett. 419 (2006) 254--258

    NASA Astrophysics Data System (ADS)

    Klein, Roger A.; Zottola, Mark A.

    2006-10-01

    In their Comment on our recent Letter [R.A. Klein, M.A. Zottola, Chem. Phys. Lett. 419 (2006) 254-258], Feller and Peterson point out that density functional theory combined with the Pople triple split-valence basis-set 6-311++G(2d,p), does indeed perform well in comparison to second-order perturbation and coupled cluster theory in combination with correlation-consistent basis-sets for the prediction of bond lengths and harmonic frequencies but does not provide acceptable accuracy for dissociation energies. MPW1PW91/6-311++G(2d,p) is, therefore, highly suitable and computationally efficient for generating starting structures for subsequent single-point (SP) calculations at higher and more computationally expensive levels of theory.

  13. Comment on "Radicalicity: A scale to compare reactivities of radicals" (Chem. Phys. Lett. 618 (2015) 99-101)*

    DOE PAGES

    Poutsma, Marvin L.

    2016-04-21

    The recently proposed term radicalicity was described as a measure of the reactivity of a free radical Q*, i.e., a kinetic quantity. Here it is shown that in fact it is simply a frame-shifted version of the well-known bond dissociation energy, a thermodynamic quantity. Hence its use is discouraged.

  14. Comments on “Thermal relic abundances of particles with velocity-dependent interactions” [Phys. Lett. B 687 (2010) 275

    NASA Astrophysics Data System (ADS)

    Iminniyaz, Hoernisa

    2013-06-01

    We reexamine the effect of kinetic decoupling on the relic density of the non-relativistic particles whose annihilation rate is increased by Sommerfeld enhancement. I claim that the result in Dent et al. (2010) [1] is wrong in the case of kinetic decoupling for small coupling constant α.

  15. Publisher's Note: Search for the Rare Leptonic Decay B+→μ+νμ [ Phys. Rev. Lett. 92, 221803 (2004)

    NASA Astrophysics Data System (ADS)

    Aubert, B.; Barate, R.; Boutigny, D.; Couderc, F.; Gaillard, J.-M.; Hicheur, A.; Karyotakis, Y.; Lees, J. P.; Tisserand, V.; Zghiche, A.; Palano, A.; Pompili, A.; Chen, J. C.; Qi, N. D.; Rong, G.; Wang, P.; Zhu, Y. S.; Eigen, G.; Ofte, I.; Stugu, B.; Abrams, G. S.; Borgland, A. W.; Breon, A. B.; Brown, D. N.; Button-Shafer, J.; Cahn, R. N.; Charles, E.; Day, C. T.; Gill, M. S.; Gritsan, A. V.; Groysman, Y.; Jacobsen, R. G.; Kadel, R. W.; Kadyk, J.; Kerth, L. T.; Kolomensky, Yu. G.; Kukartsev, G.; Leclerc, C.; Levi, M. E.; Lynch, G.; Mir, L. M.; Oddone, P. J.; Orimoto, T. J.; Pripstein, M.; Roe, N. A.; Ronan, M. T.; Shelkov, V. G.; Telnov, A. V.; Wenzel, W. A.; Ford, K.; Harrison, T. J.; Hawkes, C. M.; Morgan, S. E.; Watson, A. T.; Watson, N. K.; Fritsch, M.; Goetzen, K.; Held, T.; Koch, H.; Lewandowski, B.; Pelizaeus, M.; Peters, K.; Schmuecker, H.; Steinke, M.; Boyd, J. T.; Chevalier, N.; Cottingham, W. N.; Kelly, M. P.; Latham, T. E.; Mackay, C.; Wilson, F. F.; Abe, K.; Cuhadar-Donszelmann, T.; Hearty, C.; Mattison, T. S.; McKenna, J. A.; Thiessen, D.; Kyberd, P.; McKemey, A. K.; Teodorescu, L.; Blinov, V. E.; Bukin, A. D.; Golubev, V. B.; Ivanchenko, V. N.; Kravchenko, E. A.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Yushkov, A. N.; Best, D.; Bruinsma, M.; Chao, M.; Eschrich, I.; Kirkby, D.; Lankford, A. J.; Mandelkern, M.; Mommsen, R. K.; Roethel, W.; Stoker, D. P.; Buchanan, C.; Hartfiel, B. L.; Gary, J. W.; Layter, J.; Shen, B. C.; Wang, K.; del Re, D.; Hadavand, H. K.; Hill, E. J.; Macfarlane, D. B.; Paar, H. P.; Rahatlou, Sh.; Sharma, V.; Berryhill, J. W.; Campagnari, C.; Dahmes, B.; Levy, S. L.; Long, O.; Lu, A.; Mazur, M. A.; Richman, J. D.; Verkerke, W.; Beck, T. W.; Beringer, J.; Eisner, A. M.; Heusch, C. A.; Lockman, W. S.; Schalk, T.; Schmitz, R. E.; Schumm, B. A.; Seiden, A.; Spradlin, P.; Walkowiak, W.; Williams, D. C.; Wilson, M. G.; Albert, J.; Chen, E.; Dubois-Felsmann, G. P.; Dvoretskii, A.; Erwin, R. J.; Hitlin, D. G.; Narsky, I.; Piatenko, T.; Porter, F. C.; Ryd, A.; Samuel, A.; Yang, S.; Jayatilleke, S.; Mancinelli, G.; Meadows, B. T.; Sokoloff, M. D.; Abe, T.; Blanc, F.; Bloom, P.; Chen, S.; Clark, P. J.; Ford, W. T.; Nauenberg, U.; Olivas, A.; Rankin, P.; Roy, J.; Smith, J. G.; van Hoek, W. C.; Zhang, L.; Harton, J. L.; Hu, T.; Soffer, A.; Toki, W. H.; Wilson, R. J.; Zhang, J.; Altenburg, D.; Brandt, T.; Brose, J.; Colberg, T.; Dickopp, M.; Feltresi, E.; Hauke, A.; Lacker, H. M.; Maly, E.; Müller-Pfefferkorn, R.; Nogowski, R.; Otto, S.; Schubert, J.; Schubert, K. R.; Schwierz, R.; Spaan, B.; Bernard, D.; Bonneaud, G. R.; Brochard, F.; Grenier, P.; Thiebaux, Ch.; Vasileiadis, G.; Verderi, M.; Bard, D. J.; Khan, A.; Lavin, D.; Muheim, F.; Playfer, S.; Andreotti, M.; Azzolini, V.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cibinnetto, G.; Luppi, E.; Negrini, M.; Piemontese, L.; Sarti, A.; Treadwell, E.; Baldini-Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Patteri, P.; Piccolo, M.; Zallo, A.; Buzzo, A.; Capra, R.; Contri, R.; Crosetti, G.; Lo Vetere, M.; Macri, M.; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Santroni, A.; Tosi, S.; Bailey, S.; Morii, M.; Won, E.; Dubitzky, R. S.; Langenegger, U.; Bhimji, W.; Bowerman, D. A.; Dauncey, P. D.; Egede, U.; Gaillard, J. R.; Morton, G. W.; Nash, J. A.; Taylor, G. P.; Grenier, G. J.; Lee, S.-J.; Mallik, U.; Cochran, J.; Crawley, H. B.; Lamsa, J.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Yi, J.; Davier, M.; Grosdidier, G.; Höcker, A.; Laplace, S.; Le Diberder, F.; Lepeltier, V.; Lutz, A. M.; Petersen, T. C.; Plaszczynski, S.; Schune, M. H.; Tantot, L.; Wormser, G.; Brigljević, V.; Cheng, C. H.; Lange, D. J.; Simani, M. C.; Wright, D. M.; Bevan, A. J.; Coleman, J. P.; Fry, J. R.; Gabathuler, E.; Gamet, R.; Kay, M.; Parry, R. J.; Payne, D. J.; Sloane, R. J.; Touramanis, C.; Back, J. J.; Harrison, P. F.; Mohanty, G. B.; Brown, C. L.; Cowan, G.; Flack, R. L.; Flaecher, H. U.; George, S.; Green, M. G.; Kurup, A.; Marker, C. E.; McMahon, T. R.; Ricciardi, S.; Salvatore, F.; Vaitsas, G.; Winter, M. A.; Brown, D.; Davis, C. L.; Allison, J.; Barlow, N. R.; Barlow, R. J.; Hart, P. A.; Hodgkinson, M. C.; Lafferty, G. D.; Lyon, A. J.; Williams, J. C.; Farbin, A.; Hulsbergen, W. D.; Jawahery, A.; Kovalskyi, D.; Lae, C. K.; Lillard, V.; Roberts, D. A.; Blaylock, G.; Dallapiccola, C.; Flood, K. T.; Hertzbach, S. S.; Kofler, R.; Koptchev, V. B.; Moore, T. B.; Saremi, S.; Staengle, H.; Willocq, S.; Cowan, R.; Sciolla, G.; Taylor, F.; Yamamoto, R. K.; Mangeol, D. J. J.; Patel, P. M.; Robertson, S. H.; Lazzaro, A.; Palombo, F.; Bauer, J. M.; Cremaldi, L.; Eschenburg, V.; Godang, R.; Kroeger, R.; Reidy, J.; Sanders, D. A.; Summers, D. J.; Zhao, H. W.; Brunet, S.; Cote-Ahern, D.; Taras, P.; Nicholson, H.; Cartaro, C.; Cavallo, N.; de Nardo, G.; Fabozzi, F.; Gatto, C.; Lista, L.; Paolucci, P.; Piccolo, D.; Sciacca, C.; Baak, M. A.; Raven, G.; Wilden, L.; Jessop, C. P.; Losecco, J. M.; Gabirel, T. A.; Allmmendinger, T.; Brau, B.; Gan, K. K.; Honscheid, K.; Hufnagel, D.; Kagan, H.; Kass, R.; Pulliam, T.; Ter-Antonyan, R.; Wong, Q. K.; Brau, J.; Frey, R.; Igonkina, O.; Potter, C. T.; Sinev, N. B.; Strom, D.; Torrence, E.; Colecchia, F.; Dorigo, A.; Galeazzi, F.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroli, R.; Tiozzo, G.; Voci, C.; Benayoun, M.; Briand, H.; Chauveau, J.; David, P.; de La Vaissière, Ch.; del Buono, L.; Hamon, O.; John, M. J. J.; Leruste, Ph.; Ocariz, J.; Pivk, M.; Roos, L.; T'jampens, S.; Therin, G.; Manfredi, P. F.; Re, V.; Behera, P. K.; Gladney, L.; Guo, Q. H.; Panetta, J.; Anulli, F.; Biasini, M.; Peruzzi, I. M.; Pioppi, M.; Angelini, C.; Batignani, G.; Bettarini, S.; Bondioli, M.; Bucci, F.; Calderini, G.; Carpinelli, M.; del Gamba, V.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Marchiori, G.; Martinez-Vidal, F.; Morganti, M.; Neri, N.; Paoloni, E.; Rama, M.; Rizzo, G.; Sandrelli, F.; Walsh, J.; Haire, M.; Hudd, D.; Paick, K.; Wagoner, D. E.; Danielson, N.; Elmer, P.; Lu, C.; Miftakov, V.; Olsen, J.; Smith, A. J. S.; Varnes, E. W.; Bellini, F.; Cavoto, G.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Mazzoni, M. A.; Morganti, S.; Pierini, M.; Piredda, G.; Safai Tehrani, F.; Voena, C.; Christ, S.; Wagner, G.; Waldi, R.; Adye, T.; de Groot, N.; Franek, B.; Geddes, N. I.; Gopal, G. P.; Olaiya, E. O.; Xella, S. M.; Aleksan, R.; Emery, S.; Gaidot, A.; Ganzhur, S. F.; Giraud, P.-F.; Hamel de Monchenault, G.; Kozanecki, W.; Langer, M.; Legendre, M.; London, G. W.; Mayer, B.; Schott, G.; Vasseur, G.; Yeche, Ch.; Zito, M.; Purohit, M. V.; Weidemann, A. W.; Yumiceva, F. X.; Aston, D.; Bartoldus, R.; Berger, N.; Boyarski, A. M.; Buchmueller, O. L.; Convery, M. R.; Cristinziani, M.; Dong, D.; Dorfan, J.; Dujmic, D.; Dunwoodie, W.; Elsen, E. E.; Field, R. C.; Glanzman, T.; Gowdy, S. J.; Hadig, T.; Holyo, V.; Hryn'ova, T.; Innes, W. R.; Kelsey, M. H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Libby, J.; Luitz, S.; Luth, V.; Lynch, H. L.; Marsiske, H.; Messner, R.; Muller, D. R.; O'Grady, C. P.; Ozcan, V. E.; Perazzo, A.; Perl, M.; Petrak, S.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Schindler, R. H.; Schwiening, J.; Simi, G.; Snyder, A.; Soha, A.; Stelzer, J.; Su, D.; Sullivan, M. K.; Va'Vra, J.; Wagner, S. R.; Weaver, M.; Weinstein, A. J. R.; Wisniewski, W. J.; Wright, D. H.; Young, C. C.; Buchat, P. R.; Edwards, A. J.; Meyer, T. I.; Peterson, B. A.; Roat, C.; Ahmed, M.; Ahmed, S.; Alam, M. S.; Ernst, J. A.; Saeed, M. A.; Saleem, M.; Wappler, F. R.; Bugg, W.; Krishnamurthy, M.; Spanier, S. M.; Eckmann, R.; Kim, H.; Ritchie, J. L.; Satpathy, A.; Schwitters, R. F.; Izen, J. M.; Kitayama, I.; Lou, X. C.; Ye, S.; Bianchi, F.; Bona, M.; Gallo, F.; Gamba, D.; Borean, C.; Bosisio, L.; Cossutti, F.; della Ricca, G.; Dittongo, S.; Grancagnolo, S.; Lanceri, L.; Poropat, P.; Vitale, L.; Vuagnin, G.; Panvini, R. S.; Banerjee, Sw.; Brown, C. M.; Fortin, D.; Jackson, P. D.; Kowalewski, R.; Roney, J. M.; Band, H. R.; Dasu, S.; Datta, M.; Eichenbaum, A. M.; Johnson, J. R.; Kutter, P. E.; Li, H.; Liu, R.; di Lodovico, F.; Mihalyi, A.; Mohapatra, A. K.; Pan, Y.; Prepost, R.; Sekula, S. J.; von Wimmersperg-Toeller, J. H.; Wu, J.; Wu, S. L.; Yu, Z.; Neal, H.

    2004-10-01

    We have performed a search for the rare leptonic decay B+ --> mu+ nu_mu with data collected at the Upsilon(4S) resonance by the BABAR experiment at the PEP-II storage ring. In a sample of 88.4 million BBbar pairs, we find no significant evidence for a signal and set an upper limit on the branching fraction BR(B+ --> mu+ nu_mu) < 6.6 x 10^{-6} at the 90% confidence level.

  16. Erratum: Creation of X-Ray Transparency of Matter by Stimulated Elastic Forward Scattering [Phys. Rev. Lett. 115 , 107402 (2015)

    SciTech Connect

    Stöhr, J.; Scherz, A.

    2016-01-06

    X-ray absorption by matter has long been described by the famous Beer-Lambert law. Here we show how this fundamental law needs to be modified for high-intensity coherent x-ray pulses, now available at x-ray free electron lasers, due to the onset of stimulated elastic forward scattering. We present an analytical expression for the modified polarization-dependent Beer-Lambert law for the case of resonant core-to-valence electronic transitions and incident transform limited x-ray pulses. Upon transmission through a solid, the absorption and dichroic contrasts are found to vanish with increasing x-ray intensity, with the stimulation threshold lowered by orders of magnitude through a super-radiative coherent effect. Our results have broad implications for the study of matter with x-ray lasers.

  17. Corrigendum to ``Early Gondwanan connection for the Argentine Precordillera terrane'' [Earth Planet. Sci. Lett. 205 (2003) 349-359

    NASA Astrophysics Data System (ADS)

    Finney, S. C.; Gleason, J. D.; Gehrels, G. E.; Peralta, S.; Acenolaza, G.

    2004-03-01

    We have recently discovered a significant mistake in this paper. In the original data set used for our interpretation, U-Pb detrital zircon ages for two samples were inadvertently switched. The error was caught after new data were obtained on similar rocks. The error evidently occurred during uploading of data from laboratory computers into spreadsheets. The mix-up has been verified by re-analyzing a subset of zircons from each of the original samples. As a consequence, in the original paper, the formation names for two samples - La Cebila and Cerro Totora - are switched.

  18. Erratum to: “S-matrix for s-wave gravitational scattering”. [Phys. Lett. B 521 (2001) 357

    NASA Astrophysics Data System (ADS)

    Fischer, P.; Grumiller, D.; Kummer, W.; Vassilevich, D. V.

    2002-04-01

    Due to notational changes during the final preparation of the paper some of the pre-factors unfortunately were overlooked: in pii:(1) one has to replace X(x) with X(x)/2. In pii:Eq. (2) the constant term -2 must be replaced by -4. pii:Eq. (13) should read q2(x)=4p1+8c0y0p1-2c0y03/2-c1y0+c1-6c0y01/2p1h(x,y). In pii:(16) in the first bracket on the r.h.s. a constant d=2 c0y0 must be added. In addition, the following terms require a sign change: in pii:(6) the matter terms in the second line, in pii:(11), (12) the quantity h(x,y), in the text below pii:(14)∂0q2(y0+)-∂0q2(y0-), in the text below pii:(16) the Schwarzschild- and the Rindler-term m, respectively, a, in pii:(18)c0 and in pii:(20)Vb(4). The results pii:(21)-(28) are unaffected.

  19. Erratum: "Influence of heavy metal materials on magnetic properties of Pt/Co/heavy metal tri-layered structures" [Appl. Phys. Lett. 110, 012405 (2017)

    NASA Astrophysics Data System (ADS)

    Zhang, Boyu; Cao, Anni; Qiao, Junfeng; Tang, Minghong; Cao, Kaihua; Zhao, Xiaoxuan; Eimer, Sylvain; Si, Zhizhong; Lei, Na; Wang, Zhaohao; Lin, Xiaoyang; Zhang, Zongzhi; Wu, Mingzhong; Zhao, Weisheng

    2017-03-01

    Pt/Co/heavy metal (HM) tri-layered structures with interfacial perpendicular magnetic anisotropy (PMA) are currently under intensive research for several emerging spintronic effects, such as spinorbit torque, domain wall motion, and room temperature skyrmions. HM materials are used as capping layers to generate the structural asymmetry and enhance the interfacial effects. For instance, the Pt/Co/Ta structure attracts a lot of attention as it may exhibit large Dzyaloshinskii-Moriya interaction. However, the dependence of magnetic properties on different capping materials has not been systematically investigated. In this paper, we experimentally show the interfacial PMA and damping constant for Pt/Co/HM tri-layered structures through time-resolved magneto-optical Kerr effect measurements as well as magnetometry measurements, where the capping HM materials are W, Ta, and Pd. We found that the Co/HM interface plays an important role on the magnetic properties. In particular, the magnetic multilayers with a W capping layer features the lowest effective damping value, which may be attributed to the different spin-orbit coupling and interfacial hybridization between Co and HM materials. Our findings allow a deep understanding of the Pt/Co/HM tri-layered structures. Such structures could lead to a better era of data storage and processing devices.

  20. Retraction notice to "On a general class of regular rotating black holes based on a smeared mass distribution" [Phys. Lett. B 743 (2015) 492-502

    NASA Astrophysics Data System (ADS)

    Larranaga, Alexis; Cardenas-Avendano, Alejandro; Torres, Daniel Alexdy

    2015-07-01

    This article has been retracted: please see Elsevier Policy on Article Withdrawal. This article has been retracted at the request of the Editor-in-Chief. The authors have plagiarized part of a paper that had already appeared in Adv. High Energy Physics, P. Nicolini, A. Orlandi, E. Spallucci, The Final Stage of Gravitationally Collapsed Thick Matter Layers, Vol 2013 (2013), Article ID 812084 http://dx.doi.org/10.1155/2013/812084. One of the conditions of submission of a paper for publication is that authors declare explicitly that their work is original and has not appeared in a publication elsewhere. Re-use of any data should be appropriately cited. As such this article represents a severe abuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process.

  1. Corrigendum to "Topological map of the Hofstadter butterfly: Fine structure of Chern numbers and Van Hove singularities" [Phys. Lett. A 380 (20) (2016) 1772-1780

    NASA Astrophysics Data System (ADS)

    Naumis, Gerardo G.

    2016-10-01

    By error, in the last version of the manuscript it was deleted in Section 3 that the self-similar properties of the butterfly topological map was worked out by Indu Satija (private communication) in 2014. Some aspects can be found in the Archives, titled ;Topology and Self-Similarity of the Hofstadter Butterfly;, see http://arxiv.org/abs/1405.0263.

  2. Comment on 'On Saltiel's isopolarizability approach and its applicability to diphenylpolyenes' by J. Catalán, Chem. Phys. Lett. 635 (2015) 56-59

    NASA Astrophysics Data System (ADS)

    Saltiel, Jack; Turek, Andrzej M.

    2015-10-01

    This is in response to Catalán's objection to our use of isopolarizability conditions in the resolution of the absorption and fluorescence spectra of the s-cis and s-trans all-trans-1.6-diphenyl-1,3,5-hexatriene (ttt-DPH) conformers and the resolution of the fluorescence spectrum of the s-trans conformer to 21Ag → 11Ag and 11Bu → 11Ag spectra. Contrary to Catalán's assertion, we did not assume identical solvatochromic and thermochromic responses of ttt-DPH to medium changes. Those responses depend on a complex combination of factors that can differ from molecule to molecule.

  3. Reply on: "Comment on: The ascent of kimberlite: Insights from olivine" authored by Brett R.C. et al. [Earth Planet. Sci. Lett. 424 (2015) 119-131

    NASA Astrophysics Data System (ADS)

    Brett, R. Curtis; Russell, J. K.; Andrews, G. D. M.; Jones, T. J.

    2016-04-01

    The Kamenetsky (2016) comment on the Kimberlite Factory model proposed by Brett et al. (2015) asserts, ;A cornerstone of this model is a specific, carbonatitic composition of proto-kimberlite melts ascending through the sub-cratonic lithospheric mantle; and ;… the major thrust of the study hinges on the premise that the parental kimberlite melt is carbonatitic;. This is a clear misstatement of our central thesis, which is to utilize the attributes of olivine xenocrysts to constrain the physical ascent of kimberlite. Brett et al.'s study does not hinge on the premise that parental kimberlite melt is carbonatitic. Rather, our interpretation that kimberlite melt originates as near carbonatitic hinges on our novel observation that early ;carbonate sealed cracks provide evidence of melt being drawn into decompression cracks and precipitating; (p. 129). Our connection between this observation and our interpretation is tied explicitly to earlier published works ;in this regard, the carbonate-filled sealed cracks strongly support to the hypothesis that all kimberlite magmas originate as carbonatitic-melts (e.g.,Russell et al., 2012, 2013;Kamenetsky et al., 2013; Pilbeam et al., 2013; Kamenetsky and Yaxley, 2015; Bussweiler et al., 2015); (p. 129). To state that our interpretation is based on a pre-existing bias towards a model of a carbonatitic origin of kimberlite magmas is incorrect. Rather, our new observational data independently demonstrates that the presence of carbonate-sealed cracks formed during kimberlite ascent.

  4. Comment on: "The ascent of kimberlite: Insights from olivine" by Brett R.C. et al. [Earth Planet. Sci. Lett. 424 (2015) 119-131

    NASA Astrophysics Data System (ADS)

    Kamenetsky, Vadim S.

    2016-04-01

    Brett et al. (2015) proposed a kimberlite factory model that ;…involves carbonatitic proto-kimberlite melts preferentially assimilating Opx xenocrysts as they transit the cratonic mantle lithosphere to evolve into silicic-hydrous melts that reach olivine saturation during ascent; (p. 130). A cornerstone of this model is a specific, carbonatitic composition of proto-kimberlite melts ascending through the subcratonic lithospheric mantle ;…whereby parental carbonatitic magmas are progressively converted to kimberlite (e.g., Russell et al., 2012, 2013; Bussweiler et al., 2015); (p. 120). The model by Brett et al. (2015) is based on observations of ;the carbonate-sealed cracks; in olivine that ;…strongly support to the hypothesis that all kimberlite magmas originate as carbonatitic-melts (e.g., Russell et al., 2012, 2013; Kamenetsky et al., 2013; Pilbeam et al., 2013; Kamenetsky and Yaxley, 2015; Bussweiler et al., 2015).; (p. 129). While the major thrust of the study by Brett et al. (2015) hinges on the premise that the parental kimberlite melt is carbonatitic, the overwhelming majority in the kimberlite community still prefers a carbonated ultramafic/ultrabasic composition for parental kimberlite melts. Thus the suggestion that kimberlites have an initial carbonatite composition is not less than ;a paradigm shift; in the kimberlite petrology. It appears that a carbonatite origin for kimberlites has been proposed in many studies that significantly pre-date the publications starting from 2012 that they cite, but which unfortunately are overlooked by Brett et al. (2015). It is, therefore, worth acknowledging the research which has previously advanced this unorthodox idea.

  5. Erratum to: ``Heavy quark production via supersymmetric interaction at a neutrino factory''[Phys. Lett. B 508 (2001) 74-78

    NASA Astrophysics Data System (ADS)

    Chakraverty, Debrupa; Datta, Anindya; Mukhopadhyaya, Biswarup

    2001-11-01

    In this Erratum, we incorporate the following minor corrections to the original Letter: On p. 75, in the line after pii:Eq. (1) "where Li and Qi are SU(2) doublet leptons and quarks, Eci and Dci are SU(2) singlet charged lepton and down quarks, and Hu is the Higgs superfield responsible for the generation of the up-type quark masses. i, j and k are generation indices, while colour and SU(2) indices are not explicitly shown above" should be replaced by "where L̂i and Q̂i are SU(2) doublet leptons and quarks, Êci and D̂ci are SU(2) singlet charged lepton and down quarks, and Ĥu is the Higgs superfield responsible for the generation of the up-type quark masses. i, j and k are generation indices, while colour indices are not explicitly shown above".

  6. Corrigendum to "Groundwater storage changes in the Tibetan Plateau and adjacent areas revealed from GRACE satellite gravity data" [Earth Planet. Sci. Lett. 449 (2016) 228-239

    NASA Astrophysics Data System (ADS)

    Xiang, L.; Wang, H.; Steffen, H.; Wu, P.; Jia, L.; Jiang, L.; Shen, Q.

    2016-10-01

    The authors regret that the Acknowledgement was published with the funding support for Hansheng Wang declared in the incorrect order. The corrected Acknowledgement is as follows (please note the revised section appears in italics):

  7. Corrigendum to "A redox-stratified ocean 3.2 billion years ago" [Earth Planet. Sci. Lett. 430 (2015) 43-53

    NASA Astrophysics Data System (ADS)

    Satkoski, Aaron M.; Beukes, Nicolas J.; Li, Weiqiang; Beard, Brian L.; Johnson, Clark M.

    2017-02-01

    The authors have discovered a calculation error in the concentration data for U, Th and Pb. This error does not affect any measured isotopic compositions: 206Pb/204Pb, 207Pb/204Pb, 238U/204Pb, 232Th/204Pb, and 235U/204Pb; these all remain the same. None of the Fe isotope data are affected. Hence, none of the conclusions for open or closed-system U-Th-Pb behavior are affected, nor the conclusions of a redox gradient between shallow- and deep-water U contents. The magnitude of the shallow- and deep-water U content contrast remains the same, where U contents in shallow seawater are estimated to have been about three times that of deep-water samples.

  8. Comment on "Compact envelope dark solitary wave in a discrete nonlinear electrical transmission line" [Phys. Lett. A 373 (2009) 3801-3809

    NASA Astrophysics Data System (ADS)

    Yamgoué, Serge Bruno; Pelap, François Beceau

    2016-05-01

    We revisit the derivation of the equation modeling envelope waves in a discrete nonlinear electrical transmission line (NLTL) considered a few years back in Physics Letters A 373 (2009) 3801-3809. Using a combination of rotating wave approximation and the Gardner-Morikawa transformation, we show that the modulated waves are described by a new type of extended nonlinear Schrödinger equation. In addition the expressions of several coefficients of this equation are found to be strongly different from those given earlier. As a consequence, key relationships between these coefficients that sustained the previous analysis are broken.

  9. Corrigendum to "Deep water provenance and dynamics of the (de)glacial Atlantic meridional overturning circulation" [Earth Planet. Sci. Lett. 445 (2016) 68-78

    NASA Astrophysics Data System (ADS)

    Lippold, Jörg; Gutjahr, Marcus; Blaser, Patrick; Christner, Emanuel; de Carvalho Ferreira, Maria Luiza; Mulitza, Stefan; Christl, Marcus; Wombacher, Frank; Böhm, Evelyn; Antz, Benny; Cartapanis, Olivier; Vogel, Hendrik; Jaccard, Samuel L.

    2017-01-01

    We have reconstructed past modes of the Atlantic Meridional Overturning Circulation (AMOC) by combining two sedimentary proxies, Nd isotopes (εNd) and the 231Pa/230Th ratio over the last deglaciation. Combined down-core 231Pa/230Th and εNd records from six Atlantic Ocean sediment archives are presented (Lippold et al., 2016).

  10. Erratum: Evidence of b-jet quenching in PbPb collisions at sNN=2.76TeV [Phys. Rev. Lett. 113 , 132301 (2014)

    DOE PAGES

    Chatrchyan, S.

    2015-07-10

    In our Letter, there was a component of the statistical uncertainty from the simulated PbPb Monte Carlo samples. This uncertainty was not propagated to all of the results. Figures 3 and 4 have been updated to reflect this source of uncertainty. In this case, the statistical uncertainties remain smaller than the systematic uncertainties in all cases such that the conclusions of the Letter are unaltered.

  11. Corrigendum to "An integrated model for dune morphology and sand fluxes on Mars" [Earth Planet. Sci. Lett. 457 (2017) 204-212

    NASA Astrophysics Data System (ADS)

    Runyon, K. D.; Bridges, N. T.; Ayoub, F.; Newman, C. E.; Quade, J. J.

    2017-02-01

    The authors regret that some of the X and Y data were de-correlated in a Matlab script used to generate Fig. 5a (top left pane). They confirm this is an isolated incident and does not change the discussion or conclusion of the paper, nor does it change the message of the figure.

  12. Erratum to "The surface expression of radiocarbon anomalies near Baja California during deglaciation" [Earth Planet. Sci. Lett. 422 (2015) 67-74

    NASA Astrophysics Data System (ADS)

    Lindsay, Colin M.; Lehman, Scott J.; Marchitto, Thomas M.; Ortiz, Joseph D.

    2016-05-01

    It was discovered that the rows and columns did not align correctly in part of the original data supplement file for the above article. As a result, the Publisher has 'resupplied' (reposted and replaced) the supplementary file with correctly-aligned columns and rows.

  13. Erratum to “Evolution of chirality from γ soft 108Ru to triaxial 110,112Ru” [Phys. Lett. B 670 (4-5) (2009) 307

    NASA Astrophysics Data System (ADS)

    Hamilton, Joseph; Luo, Y. X.

    2010-08-01

    We have noticed that we made a typographical error on spelling of one of the author's names. “Z. Jang” should be changed to “Z. Jiang” and add the following address: AdValue Photonics, Inc., Tucson, AZ 85714, USA.

  14. Corrigendum to "Geochemical evidence for cryptic sulfur cycling in salt marsh sediments" [Earth Planet. Sci. Lett. 453 (2016) 23-32

    NASA Astrophysics Data System (ADS)

    Mills, Jennifer V.; Antler, Gilad; Turchyn, Alexandra V.

    2016-12-01

    The authors regret that the δ18OSO4 axis in Fig. 2 and the y axis in Fig. 6b were mislabelled in the published manuscript. In Fig. 2, the initial δ18OSO4 axis went from 17-27 and should have gone from 7-17. In Fig. 6b, the y axis went from 0-0.12 and should have gone from 0-0.06. The authors would like to apologise for any inconvenience caused. The corrected figures appear below for the reader's convenience.

  15. Corrigendum to "Widespread occurrence of (per)chlorate in the Solar System" [Earth Planet. Sci. Lett. 430 (2015) 470-476

    NASA Astrophysics Data System (ADS)

    Jackson, W. Andrew; Davila, Alfonso F.; Sears, Derek; Coates, John D.; McKay, Christopher P.; Brundrett, Maeghan; Estrada, Nubia; Böhlke, J. K.

    2016-02-01

    The authors regret that two sets of data (Atacama (Rao et al., 2010) and Mars Meteorite Range (Kounaves et al., 2014)) in Fig. 2 of our article were plotted in the wrong units. The correction does not change the relationship between ClO3- and ClO4- ; it only shifts the magnitude of the concentrations. The conclusions of the article are not affected. The corrected Fig. 2 appears below.

  16. Corrigendum to "Stable chromium isotopic composition of meteorites and metal-silicate experiments: Implications for fractionation during core formation" [Earth Planet. Sci. Lett. 435 (2016) 14-21

    NASA Astrophysics Data System (ADS)

    Bonnand, P.; Williams, H. M.; Parkinson, I. J.; Wood, B. J.; Halliday, A. N.

    2017-02-01

    The authors have corrected a few minor mistakes that appear in Table 2, that is, four ε 54Cr values have been updated (JP-1, Bremervörde, Kernouve and Saint-Severin). These minor changes do not affect the figures or the conclusions of the article.

  17. Comment on 'Mapping of localized spin-wave excitations by near-field Brillouin light scattering' [Appl. Phys. Lett. 97, 152502 (2010)].

    SciTech Connect

    Giovannini, L.; Montoncello, F.; Nizzoli, F.; Vavassori, P.; Grimsditch, M.

    2011-11-04

    The authors reported in their letter some outstanding experimental results of spin excitations in nano-particles investigated by near-field Brillouin scattering. They conclude from their observations that existing theories -- in particular micromagnetic simulations -- do not correctly describe the behavior of the spin modes. Since excellent agreement has been reported between spin-wave mode frequencies obtained from Brillouin scattering experiments and those obtained from micromagnetic-based simulations, it is somewhat surprising that the simulations should fail for the particles investigated in Ref. 1. In the literature, there is also evidence of various kinds and degrees of mode localization when exchange competes with dipolar interactions. When dipolar long-range interactions are taken into account, the eigenmodes can be seen as the superposition of plane waves, leading to different localizations and in particular to the appearence of bulk-dead modes. We have simulated the normal modes of the particles used in Ref. 1, with the dynamical matrix method; the results are shown in Fig. 1 for different values of the applied field. In addition to the lowest frequency non-localized mode (1-BA), several localized modes are present. Large particles exhibit modes with oscillations along the field direction;8 for such modes, we use the label n-BA-loc, with n the number of nodes. While the profile of the pure end-mode, i.e., 0-BA-loc, has its maximum at the edge with the amplitude monotonously decreasing toward the interior of the ellipse, as correctly described by the authors, the localized modes with n > 0, not considered by them, do not have this characteristic: see inset of Fig. 1. Based on Fig. 1, we believe that the assumption that the mode they observe is 'the' localized spin mode is not correct. Instead, we believe that the mode detected in the experiment at H > 700 Oe is a combinations (due to non-linear excitation conditions of the experiment) of several n-BA-loc modes, with n?>?0. In this picture, the sharp peaks of the n-BA-loc modes are smoothed in the experimental measurements, thanks to the superposition of modes with different nodal lines. Finally, at 350 Oe, the measured profile and frequency suggest that the mode seen in the experiment may be well due to the 1-BA mode. The observed change in mode profile at 350 Oe is substantiated by the frequency behavior shown in Fig. 3(b) of Ref. 1, where it can be observed that the frequency of the low-field point does not lie on the same curve as the high-field points. In summary, before concluding that micromagnetic-based simulations of spin wave modes in nano-particles are unreliable, we believe that it is necessary to await either the simulation of large particles using small cell sizes or for more exhaustive experiments reaching lower frequencies on particles of varying size. The comparison of calculations with experiment would greatly benefit if the authors were to provide the field dependence of all the modes detected in their experiment (in order to achieve a proper assignment).

  18. Publisher's Note: Evidence for CP Violation in Time-Integrated D0→h-h+ decay rates [Phys. Rev. Lett. 108, 111602 (2012)

    NASA Astrophysics Data System (ADS)

    Aaij, R.; Abellan Beteta, C.; Adeva, B.; Adinolfi, M.; Adrover, C.; Affolder, A.; Ajaltouni, Z.; Albrecht, J.; Alessio, F.; Alexander, M.; Alkhazov, G.; Alvarez Cartelle, P.; Alves, A. A., Jr.; Amato, S.; Amhis, Y.; Anderson, J.; Appleby, R. B.; Aquines Gutierrez, O.; Archilli, F.; Arrabito, L.; Artamonov, A.; Artuso, M.; Aslanides, E.; Auriemma, G.; Bachmann, S.; Back, J. J.; Bailey, D. S.; Balagura, V.; Baldini, W.; Barlow, R. J.; Barschel, C.; Barsuk, S.; Barter, W.; Bates, A.; Bauer, C.; Bauer, Th.; Bay, A.; Bediaga, I.; Belogurov, S.; Belous, K.; Belyaev, I.; Ben-Haim, E.; Benayoun, M.; Bencivenni, G.; Benson, S.; Benton, J.; Bernet, R.; Bettler, M.-O.; van Beuzekom, M.; Bien, A.; Bifani, S.; Bird, T.; Bizzeti, A.; Bjørnstad, P. M.; Blake, T.; Blanc, F.; Blanks, C.; Blouw, J.; Blusk, S.; Bobrov, A.; Bocci, V.; Bondar, A.; Bondar, N.; Bonivento, W.; Borghi, S.; Borgia, A.; Bowcock, T. J. V.; Bozzi, C.; Brambach, T.; van den Brand, J.; Bressieux, J.; Brett, D.; Britsch, M.; Britton, T.; Brook, N. H.; Brown, H.; Büchler-Germann, A.; Burducea, I.; Bursche, A.; Buytaert, J.; Cadeddu, S.; Callot, O.; Calvi, M.; Calvo Gomez, M.; Camboni, A.; Campana, P.; Carbone, A.; Carboni, G.; Cardinale, R.; Cardini, A.; Carson, L.; Carvalho Akiba, K.; Casse, G.; Cattaneo, M.; Cauet, Ch.; Charles, M.; Charpentier, Ph.; Chiapolini, N.; Ciba, K.; Cid Vidal, X.; Ciezarek, G.; Clarke, P. E. L.; Clemencic, M.; Cliff, H. V.; Closier, J.; Coca, C.; Coco, V.; Cogan, J.; Collins, P.; Comerma-Montells, A.; Constantin, F.; Contu, A.; Cook, A.; Coombes, M.; Corti, G.; Cowan, G. A.; Currie, R.; D'Ambrosio, C.; David, P.; David, P. N. Y.; de Bonis, I.; de Capua, S.; de Cian, M.; de Lorenzi, F.; de Miranda, J. M.; de Paula, L.; de Simone, P.; Decamp, D.; Deckenhoff, M.; Degaudenzi, H.; Del Buono, L.; Deplano, C.; Derkach, D.; Deschamps, O.; Dettori, F.; Dickens, J.; Dijkstra, H.; Diniz Batista, P.; Domingo Bonal, F.; Donleavy, S.; Dordei, F.; Dosil Suárez, A.; Dossett, D.; Dovbnya, A.; Dupertuis, F.; Dzhelyadin, R.; Dziurda, A.; Easo, S.; Egede, U.; Egorychev, V.; Eidelman, S.; van Eijk, D.; Eisele, F.; Eisenhardt, S.; Ekelhof, R.; Eklund, L.; Elsasser, Ch.; Elsby, D.; Esperante Pereira, D.; Estève, L.; Falabella, A.; Fanchini, E.; Färber, C.; Fardell, G.; Farinelli, C.; Farry, S.; Fave, V.; Fernandez Albor, V.; Ferro-Luzzi, M.; Filippov, S.; Fitzpatrick, C.; Fontana, M.; Fontanelli, F.; Forty, R.; Frank, M.; Frei, C.; Frosini, M.; Furcas, S.; Gallas Torreira, A.; Galli, D.; Gandelman, M.; Gandini, P.; Gao, Y.; Garnier, J.-C.; Garofoli, J.; Garra Tico, J.; Garrido, L.; Gascon, D.; Gaspar, C.; Gauvin, N.; Gersabeck, M.; Gershon, T.; Ghez, Ph.; Gibson, V.; Gligorov, V. V.; Göbel, C.; Golubkov, D.; Golutvin, A.; Gomes, A.; Gordon, H.; Grabalosa Gándara, M.; Graciani Diaz, R.; Granado Cardoso, L. A.; Graugés, E.; Graziani, G.; Grecu, A.; Greening, E.; Gregson, S.; Gui, B.; Gushchin, E.; Guz, Yu.; Gys, T.; Haefeli, G.; Haen, C.; Haines, S. C.; Hampson, T.; Hansmann-Menzemer, S.; Harji, R.; Harnew, N.; Harrison, J.; Harrison, P. F.; Hartmann, T.; He, J.; Heijne, V.; Hennessy, K.; Henrard, P.; Hernando Morata, J. A.; van Herwijnen, E.; Hicks, E.; Holubyev, K.; Hopchev, P.; Hulsbergen, W.; Hunt, P.; Huse, T.; Huston, R. S.; Hutchcroft, D.; Hynds, D.; Iakovenko, V.; Ilten, P.; Imong, J.; Jacobsson, R.; Jaeger, A.; Jahjah Hussein, M.; Jans, E.; Jansen, F.; Jaton, P.; Jean-Marie, B.; Jing, F.; John, M.; Johnson, D.; Jones, C. R.; Jost, B.; Kaballo, M.; Kandybei, S.; Karacson, M.; Karbach, T. M.; Keaveney, J.; Kenyon, I. R.; Kerzel, U.; Ketel, T.; Keune, A.; Khanji, B.; Kim, Y. M.; Knecht, M.; Koopman, R.; Koppenburg, P.; Kozlinskiy, A.; Kravchuk, L.; Kreplin, K.; Kreps, M.; Krocker, G.; Krokovny, P.; Kruse, F.; Kruzelecki, K.; Kucharczyk, M.; Kvaratskheliya, T.; La Thi, V. N.; Lacarrere, D.; Lafferty, G.; Lai, A.; Lambert, D.; Lambert, R. W.; Lanciotti, E.; Lanfranchi, G.; Langenbruch, C.; Latham, T.; Lazzeroni, C.; Le Gac, R.; van Leerdam, J.; Lees, J.-P.; Lefèvre, R.; Leflat, A.; Lefrançois, J.; Leroy, O.; Lesiak, T.; Li, L.; Li Gioi, L.; Lieng, M.; Liles, M.; Lindner, R.; Linn, C.; Liu, B.; Liu, G.; von Loeben, J.; Lopes, J. H.; Lopez Asamar, E.; Lopez-March, N.; Lu, H.; Luisier, J.; Mac Raighne, A.; Machefert, F.; Machikhiliyan, I. V.; Maciuc, F.; Maev, O.; Magnin, J.; Malde, S.; Mamunur, R. M. D.; Manca, G.; Mancinelli, G.; Mangiafave, N.; Marconi, U.; Märki, R.; Marks, J.; Martellotti, G.; Martens, A.; Martin, L.; Martín Sánchez, A.; Martinez Santos, D.; Massafferri, A.; Mathe, Z.; Matteuzzi, C.; Matveev, M.; Maurice, E.; Maynard, B.; Mazurov, A.; McGregor, G.; McNulty, R.; Meissner, M.; Merk, M.; Merkel, J.; Messi, R.; Miglioranzi, S.; Milanes, D. A.; Minard, M.-N.; Molina Rodriguez, J.; Monteil, S.; Moran, D.; Morawski, P.; Mountain, R.; Mous, I.; Muheim, F.; Müller, K.; Muresan, R.; Muryn, B.; Muster, B.; Musy, M.; Mylroie-Smith, J.; Naik, P.; Nakada, T.; Nandakumar, R.; Nasteva, I.; Nedos, M.; Needham, M.; Neufeld, N.; Nguyen-Mau, C.; Nicol, M.; Niess, V.; Nikitin, N.; Nomerotski, A.; Novoselov, A.; Oblakowska-Mucha, A.; Obraztsov, V.; Oggero, S.; Ogilvy, S.; Okhrimenko, O.; Oldeman, R.; Orlandea, M.; Otalora Goicochea, J. M.; Owen, P.; Pal, K.; Palacios, J.; Palano, A.; Palutan, M.; Panman, J.; Papanestis, A.; Pappagallo, M.; Parkes, C.; Parkinson, C. J.; Passaleva, G.; Patel, G. D.; Patel, M.; Paterson, S. K.; Patrick, G. N.; Patrignani, C.; Pavel-Nicorescu, C.; Pazos Alvarez, A.; Pellegrino, A.; Penso, G.; Pepe Altarelli, M.; Perazzini, S.; Perego, D. L.; Perez Trigo, E.; Pérez-Calero Yzquierdo, A.; Perret, P.; Perrin-Terrin, M.; Pessina, G.; Petrella, A.; Petrolini, A.; Phan, A.; Picatoste Olloqui, E.; Pie Valls, B.; Pietrzyk, B.; Pilař, T.; Pinci, D.; Plackett, R.; Playfer, S.; Plo Casasus, M.; Polok, G.; Poluektov, A.; Polycarpo, E.; Popov, D.; Popovici, B.; Potterat, C.; Powell, A.; Prisciandaro, J.; Pugatch, V.; Navarro, A. Puig; Qian, W.; Rademacker, J. H.; Rakotomiaramanana, B.; Rangel, M. S.; Raniuk, I.; Raven, G.; Redford, S.; Reid, M. M.; Dos Reis, A. C.; Ricciardi, S.; Rinnert, K.; Roa Romero, D. A.; Robbe, P.; Rodrigues, E.; Rodrigues, F.; Rodriguez Perez, P.; Rogers, G. J.; Roiser, S.; Romanovsky, V.; Rosello, M.; Rouvinet, J.; Ruf, T.; Ruiz, H.; Sabatino, G.; Saborido Silva, J. J.; Sagidova, N.; Sail, P.; Saitta, B.; Salzmann, C.; Sannino, M.; Santacesaria, R.; Santamarina Rios, C.; Santinelli, R.; Santovetti, E.; Sapunov, M.; Sarti, A.; Satriano, C.; Satta, A.; Savrie, M.; Savrina, D.; Schaack, P.; Schiller, M.; Schleich, S.; Schlupp, M.; Schmelling, M.; Schmidt, B.; Schneider, O.; Schopper, A.; Schune, M.-H.; Schwemmer, R.; Sciascia, B.; Sciubba, A.; Seco, M.; Semennikov, A.; Senderowska, K.; Sepp, I.; Serra, N.; Serrano, J.; Seyfert, P.; Shapkin, M.; Shapoval, I.; Shatalov, P.; Shcheglov, Y.; Shears, T.; Shekhtman, L.; Shevchenko, O.; Shevchenko, V.; Shires, A.; Silva Coutinho, R.; Skwarnicki, T.; Smith, A. C.; Smith, N. A.; Smith, E.; Sobczak, K.; Soler, F. J. P.; Solomin, A.; Soomro, F.; Souza de Paula, B.; Spaan, B.; Sparkes, A.; Spradlin, P.; Stagni, F.; Stahl, S.; Steinkamp, O.; Stoica, S.; Stone, S.; Storaci, B.; Straticiuc, M.; Straumann, U.; Subbiah, V. K.; Swientek, S.; Szczekowski, M.; Szczypka, P.; Szumlak, T.; T'Jampens, S.; Teodorescu, E.; Teubert, F.; Thomas, C.; Thomas, E.; van Tilburg, J.; Tisserand, V.; Tobin, M.; Topp-Joergensen, S.; Torr, N.; Tournefier, E.; Tran, M. T.; Tsaregorodtsev, A.; Tuning, N.; Ubeda Garcia, M.; Ukleja, A.; Urquijo, P.; Uwer, U.; Vagnoni, V.; Valenti, G.; Vazquez Gomez, R.; Vazquez Regueiro, P.; Vecchi, S.; Velthuis, J. J.; Veltri, M.; Viaud, B.; Videau, I.; Vilasis-Cardona, X.; Visniakov, J.; Vollhardt, A.; Volyanskyy, D.; Voong, D.; Vorobyev, A.; Voss, H.; Wandernoth, S.; Wang, J.; Ward, D. R.; Watson, N. K.; Webber, A. D.; Websdale, D.; Whitehead, M.; Wiedner, D.; Wiggers, L.; Wilkinson, G.; Williams, M. P.; Williams, M.; Wilson, F. F.; Wishahi, J.; Witek, M.; Witzeling, W.; Wotton, S. A.; Wyllie, K.; Xie, Y.; Xing, F.; Xing, Z.; Yang, Z.; Young, R.; Yushchenko, O.; Zavertyaev, M.; Zhang, F.; Zhang, L.; Zhang, W. C.; Zhang, Y.; Zhelezov, A.; Zhong, L.; Zverev, E.; Zvyagin, A.

    2012-03-01

    A search for time-integrated CP violation in D0 -> h-h+ (h=K, pi) decays is presented using 0.62 fb^-1 of data collected by LHCb in 2011. The flavor of the charm meson is determined by the charge of the slow pion in the D*+ -> D0 pi+ and D*- -> D0bar pi- decay chains. The difference in CP asymmetry between D0 -> K-K+ and D0 -> pi-pi+, Delta ACP = ACP(K-K+) - ACP(pi-pi+), is measured to be [-0.82 \\pm 0.21(stat.) \\pm 0.11(syst.)]%. This differs from the hypothesis of CP conservation by 3.5 standard deviations.

  19. Corrigendum to "In situ observation of contour currents in the northern South China Sea: Applications for deepwater sediment transport" [Earth Planet. Sci. Lett. 430 (2015) 477-485

    NASA Astrophysics Data System (ADS)

    Zhao, Yulong; Liu, Zhifei; Zhang, Yanwei; Li, Jianru; Wang, Meng; Wang, Wenguang; Xu, Jingping

    2015-12-01

    The authors regret that the tick labels of Fig. 7d of our article were incorrect. Both the caption of the figure and the discussion in the text were correct, so the conclusions in the article were not affected. The corrected Fig. 7 appears on the next page for the readers' convenience.

  20. Comment on: “Direct evidence of ancient shock metamorphism at the site of the 1908 Tunguska event”, by P. Vannucchi et al. [Earth Planet. Sci. Lett. 409 (2015) 168-174

    NASA Astrophysics Data System (ADS)

    Schmieder, Martin; Ferrière, Ludovic; Ormö, Jens; Buchner, Elmar; Koeberl, Christian; Reimold, Wolf Uwe

    2015-06-01

    Vannucchi et al. (2015) report alleged 'shock metamorphic' features in Permian sandstone clasts associated with the Siberian Trap basalts at Mount Stojkovic inside the Great Tunguska Depression, only a few kilometers away from the site of the 1908 Tunguska event. Given the low probability that these features have formed by either the Tunguska event or by an older impact in the same area, Vannucchi et al. argue that these features may in fact not be diagnostic for impact, but could also be related to explosive volcanism.

  1. Erratum to: “Search for first generation scalar leptoquarks in pp collisions at √{s}=7 TeV with the ATLAS detector” [Phys. Lett. B 709 (2012) 158

    NASA Astrophysics Data System (ADS)

    Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdelalim, A. A.; Abdesselam, A.; Abdinov, O.; Abi, B.; Abolins, M.; Abouzeid, O. S.; Abramowicz, H.; Abreu, H.; Acerbi, E.; Acharya, B. S.; Adamczyk, L.; Adams, D. L.; Addy, T. N.; Adelman, J.; Aderholz, M.; Adomeit, S.; Adragna, P.; Adye, T.; Aefsky, S.; Aguilar-Saavedra, J. A.; Aharrouche, M.; Ahlen, S. P.; Ahles, F.; Ahmad, A.; Ahsan, M.; Aielli, G.; Akdogan, T.; Åkesson, T. P. A.; Akimoto, G.; Akimov, A. V.; Akiyama, A.; Alam, M. S.; Alam, M. A.; Albert, J.; Albrand, S.; Aleksa, M.; Aleksandrov, I. N.; Alessandria, F.; Alexa, C.; Alexander, G.; Alexandre, G.; Alexopoulos, T.; Alhroob, M.; Aliev, M.; Alimonti, G.; Alison, J.; Aliyev, M.; Allbrooke, B. M. M.; Allport, P. P.; Allwood-Spiers, S. E.; Almond, J.; Aloisio, A.; Alon, R.; Alonso, A.; Alvarez Gonzalez, B.; Alviggi, M. G.; Amako, K.; Amaral, P.; Amelung, C.; Ammosov, V. V.; Amorim, A.; Amorós, G.; Amram, N.; Anastopoulos, C.; Ancu, L. S.; Andari, N.; Andeen, T.; Anders, C. F.; Anders, G.; Anderson, K. J.; Andreazza, A.; Andrei, V.; Andrieux, M.-L.; Anduaga, X. S.; Angerami, A.; Anghinolfi, F.; Anisenkov, A.; Anjos, N.; Annovi, A.; Antonaki, A.; Antonelli, M.; Antonov, A.; Antos, J.; Anulli, F.; Aoun, S.; Aperio Bella, L.; Apolle, R.; Arabidze, G.; Aracena, I.; Arai, Y.; Arce, A. T. H.; Archambault, J. P.; Arfaoui, S.; Arguin, J.-F.; Arik, E.; Arik, M.; Armbruster, A. J.; Arnaez, O.; Arnal, V.; Arnault, C.; Artamonov, A.; Artoni, G.; Arutinov, D.; Asai, S.; Asfandiyarov, R.; Ask, S.; Åsman, B.; Asquith, L.; Assamagan, K.; Astbury, A.; Astvatsatourov, A.; Aubert, B.; Auge, E.; Augsten, K.; Aurousseau, M.; Avolio, G.; Avramidou, R.; Axen, D.; Ay, C.; Azuelos, G.; Azuma, Y.; Baak, M. A.; Baccaglioni, G.; Bacci, C.; Bach, A. M.; Bachacou, H.; Bachas, K.; Bachy, G.; Backes, M.; Backhaus, M.; Badescu, E.; Bagnaia, P.; Bahinipati, S.; Bai, Y.; Bailey, D. C.; Bain, T.; Baines, J. T.; Baker, O. K.; Baker, M. D.; Baker, S.; Banas, E.; Banerjee, P.; Banerjee, Sw.; Banfi, D.; Bangert, A.; Bansal, V.; Bansil, H. S.; Barak, L.; Baranov, S. P.; Barashkou, A.; Barbaro Galtieri, A.; Barber, T.; Barberio, E. L.; Barberis, D.; Barbero, M.; Bardin, D. Y.; Barillari, T.; Barisonzi, M.; Barklow, T.; Barlow, N.; Barnett, B. M.; Barnett, R. M.; Baroncelli, A.; Barone, G.; Barr, A. J.; Barreiro, F.; Barreiro Guimarães da Costa, J.; Barrillon, P.; Bartoldus, R.; Barton, A. E.; Bartsch, V.; Bates, R. L.; Batkova, L.; Batley, J. R.; Battaglia, A.; Battistin, M.; Bauer, F.; Bawa, H. S.; Beale, S.; Beare, B.; Beau, T.; Beauchemin, P. H.; Beccherle, R.; Bechtle, P.; Beck, H. P.; Becker, A. K.; Becker, S.; Beckingham, M.; Becks, K. H.; Beddall, A. J.; Beddall, A.; Bedikian, S.; Bednyakov, V. A.; Bee, C. P.; Begel, M.; Behar Harpaz, S.; Behera, P. K.; Beimforde, M.; Belanger-Champagne, C.; Bell, P. J.; Bell, W. H.; Bella, G.; Bellagamba, L.; Bellina, F.; Bellomo, M.; Belloni, A.; Beloborodova, O.; Belotskiy, K.; Beltramello, O.; Benami, S.; Benary, O.; Benchekroun, D.; Benchouk, C.; Bendel, M.; Bendtz, K.; Benekos, N.; Benhammou, Y.; Benhar Noccioli, E.; Benitez Garcia, J. A.; Benjamin, D. P.; Benoit, M.; Bensinger, J. R.; Benslama, K.; Bentvelsen, S.; Berge, D.; Bergeaas Kuutmann, E.; Berger, N.; Berghaus, F.; Berglund, E.; Beringer, J.; Bernat, P.; Bernhard, R.; Bernius, C.; Berry, T.; Bertella, C.; Bertin, A.; Bertinelli, F.; Bertolucci, F.; Besana, M. I.; Besson, N.; Bethke, S.; Bhimji, W.; Bianchi, R. M.; Bianco, M.; Biebel, O.; Bieniek, S. P.; Bierwagen, K.; Biesiada, J.; Biglietti, M.; Bilokon, H.; Bindi, M.; Binet, S.; Bingul, A.; Bini, C.; Biscarat, C.; Bitenc, U.; Black, K. M.; Blair, R. E.; Blanchard, J.-B.; Blanchot, G.; Blazek, T.; Blocker, C.; Blocki, J.; Blondel, A.; Blum, W.; Blumenschein, U.; Bobbink, G. J.; Bobrovnikov, V. B.; Bocchetta, S. S.; Bocci, A.; Boddy, C. R.; Boehler, M.; Boek, J.; Boelaert, N.; Böser, S.; Bogaerts, J. A.; Bogdanchikov, A.; Bogouch, A.; Bohm, C.; Bohm, J.; Boisvert, V.; Bold, T.; Boldea, V.; Bolnet, N. M.; Bomben, M.; Bona, M.; Bondarenko, V. G.; Bondioli, M.; Boonekamp, M.; Boorman, G.; Booth, C. N.; Bordoni, S.; Borer, C.; Borisov, A.; Borissov, G.; Borjanovic, I.; Borri, M.; Borroni, S.; Bortolotto, V.; Bos, K.; Boscherini, D.; Bosman, M.; Boterenbrood, H.; Botterill, D.; Bouchami, J.; Boudreau, J.; Bouhova-Thacker, E. V.; Boumediene, D.; Bourdarios, C.; Bousson, N.; Boveia, A.; Boyd, J.; Boyko, I. R.; Bozhko, N. I.; Bozovic-Jelisavcic, I.; Bracinik, J.; Braem, A.; Branchini, P.; Brandenburg, G. W.; Brandt, A.; Brandt, G.; Brandt, O.; Bratzler, U.; Brau, B.; Brau, J. E.; Braun, H. M.; Brelier, B.; Bremer, J.; Brendlinger, K.; Brenner, R.; Bressler, S.; Breton, D.; Britton, D.; Brochu, F. M.; Brock, I.; Brock, R.; Brodbeck, T. J.; Brodet, E.; Broggi, F.

    2012-05-01

    The legend of the y-axis of both figures in http://dx.doi.org/10.1016/j.physletb.2012.02.004 Fig. 4 should read σ (pp → LQLQbar) as shown in the corrected Fig. 4 attached, rather than σ × BR. This correction is purely presentational, and does not change any of the quoted results, nor the conclusions, of the original version of the Letter.

  2. Comment on "Hydrothermal preparation of analogous matrix minerals of CM carbonaceous chondrites from metal alloy particles" by Y. Peng and Y. Jing [Earth Planet. Sci. Lett. 408 (2014) 252-262

    NASA Astrophysics Data System (ADS)

    Pignatelli, Isabella; Vacher, Lionel G.; Marrocchi, Yves

    2015-10-01

    Peng and Jing (2014) recently reported the results of hydrothermal experiments designed to produce synthetic tochilinite/cronstedtite assemblages analogous to those found in the matrix of CM chondrites (Tomeoka and Buseck, 1982, 1983a, 1983b, 1985; Mackinnon and Zolensky, 1984; Zolensky and Mackinnon, 1986; Rubin et al., 2007; Bourot-Denise et al., 2010; Hewins et al., 2014; Marrocchi et al., 2014). The assemblage was obtained from an alloyed metal particle mixture of Fe, Mg, Al, Si, Cr and Ni under basic, reducing and S2--rich conditions. The hydrothermal syntheses were conducted in Teflon-lined stainless-steel autoclaves at temperature of 106-160 °C for short-duration runs and at 153 °C for long-duration runs. The phases in the assemblage were characterized by XRD and TEM, but only the analytical results of long-duration runs were reported in the article and in the Appendix as supplementary material. The phases identified were: cronstedtite and tochilinite (both present in all run products), tochilinite-cronstedtite intergrowths, polyhedral serpentine, a chrysotile-like phase, nanotube-like structures, and lizardite-like and brucite-like phases. Based on their experimental results, the authors put forward a hypothesis to explain the formation of matrix minerals in CM chondrites proposing that the precursors may be nanometer- to micrometer-sized particles of metal alloys that were altered at low temperatures by interaction with S-rich water under reducing and dynamic pressurized conditions.

  3. Corrigendum to "Climate simulations of Neoproterozoic snowball Earth events: Similar critical carbon dioxide levels for the Sturtian and Marinoan glaciations" [Earth Planet. Sci. Lett. 404 (2014) 200-205

    NASA Astrophysics Data System (ADS)

    Feulner, Georg; Kienert, Hendrik

    2015-11-01

    In Fig. 4 of our article, the colours of the curves representing the Neoproterozoic climate states at 720 Ma (1 Ma = 1 million years ago) and 650 Ma were inadvertently interchanged. The blue lines refer to the 720 Ma (Sturtian) state, the red lines to the 650 Ma (Marinoan) state. Both the description in the figure legend and the discussion in the text are correct, so the conclusions in the article are not affected. The corrected Fig. 4 with the full legend appears below for the readers' convenience.

  4. Comment on “40Ar / 39Ar dating of the Rajahmundry Traps, eastern India and their relationship to the Deccan Traps” by Knight et al. [Earth Planet Sci. Lett. 208 (2003) 85 99

    NASA Astrophysics Data System (ADS)

    Baksi, Ajoy K.

    2005-11-01

    Knight et al. presented age and chemical data on two (sets of) lava flows from the Rajahmundry area, on either bank of the Godavari River. The age and petrogenesis of these flows and their possible link to sections of the main Deccan Province are of importance to the understanding of many aspects of flood basalt volcanism. I comment on (a) the use of geochemical fingerprints for lava identification/correlation at Rajahmundry, superceding (apparent) field relations, (b) their 40Ar / 39Ar data and its refinement based on statistical tests and the alteration state of the samples (c) correlation of age data and the magnetic polarity of the lavas to the geomagnetic polarity time scale and (d) the possibility that both lavas at Rajahmundry were formed by intracanyon flows derived from ˜1000 km away.

  5. Reprint of "MDCK cell permeability characteristics of a sulfenamide produg: strategic implications in considering sulfenamide prodrugs for oral delivery of NH acids" [Bioorg. Med. Chem. Lett. 21 (2011) 172-175].

    PubMed

    Guarino, Victor R; Nti-Addae, Kwame; Stella, Valentino J

    2011-05-01

    The objective of this Letter is both to report the permeability results of a linezolid-based sulfenamide prodrug in an MDCK cell model (enterocyte surrogate system) and to discuss the strategic implications of these results for considering sulfenamide prodrugs to enhance the oral delivery of weakly acidic NH-acids (e.g., amides, ureas, etc.). The two main findings from this study are that the sulfenamide prodrug does not appear to survive intracellular transport due to conversion to linezolid and that there appears to be an apically-oriented surface conversion pathway that can additionally serve to convert the sulfenamide prodrug to linezolid upon approach of the apical membrane. It is hoped that these findings, along with the discussion of the strategic implications, will facilitate a greater awareness of the potential strengths and weaknesses inherent in the sulfenamide prodrug approach for enhancing the oral delivery of weakly acidic NH-acid drugs.

  6. Reprint of "Crystal structure of chemically synthesized HIV-1 protease and a ketomethylene isostere inhibitor based on the p2/NC cleavage site" [Bioorg. Med. Chem. Lett. 18 (2008) 4554-4557].

    PubMed

    Torbeev, Vladimir Yu; Mandal, Kalyaneswar; Terechko, Valentina A; Kent, Stephen B H

    2008-11-15

    Here we report the X-ray structures of chemically synthesized HIV-1 protease and the inactive [D25N]HIV-1 protease complexed with the ketomethylene isostere inhibitor Ac-Thr-Ile-Nlepsi[CO-CH(2)]Nle-Gln-Arg.amide at 1.4 and 1.8A resolution, respectively. In complex with the active enzyme, the keto-group was found to be converted into the hydrated gem-diol, while the structure of the complex with the inactive D25N enzyme revealed an intact keto-group. These data support the general acid-general base mechanism for HIV-1 protease catalysis.

  7. Reprint of "effect of carbohydrate amino group modifications on the cytotoxicity of glycosylated 2-phenyl-benzo[b]thiophenes and 2-phenyl-benzo[b]furans" [Bioorg. Med. Chem. Lett. 21 (2011) 2591-2596].

    PubMed

    Shi, Wei; Lowary, Todd L

    2011-09-01

    In previous studies, we have identified a family of benzo[b]furan and benzo[b]thiophene derivatives linked to amino sugars (1-6) that are cytotoxic to a range of cancer cell lines. We describe here an exploration of the effect of structural modification of the amino group on one of the carbohydrate residues (4-amino-2,3,4,6-tetradeoxy-α-l-threo-hexopyranoside) on in vitro cytotoxicity. It has been found that maintaining at least one basic functional group around the C-4 position in the carbohydrate moiety is crucial for cytotoxicity. Furthermore, it appears that modifications around the C-4 position are limited by suitable hydrophilic/hydrophobic and/or ionic interactions, as well as steric constraints.

  8. Comment on “Isotopic fractionation between Fe(III) and Fe(II) in aqueous solutions” by Clark Johnson et al., [Earth Planet. Sci. Lett. 195 (2002) 141–153

    USGS Publications Warehouse

    Bullen, Thomas D.; White, Arthur F.; Childs, Cyril W.

    2003-01-01

    In a recent contribution [1], Johnson et al. reported the equilibrium isotope fractionation factor between dissolved Fe(II) and Fe(III) in aqueous solutions at pH=2.5 and 5.5. They suggest that because the iron isotope fractionation observed in their experiments spans virtually the entire range observed in sedimentary rocks, Fe(II)–Fe(III) aqueous speciation may play a major role in determining iron isotope variations in nature where Fe(II) and Fe(III) can become physically separated. They discounted earlier conclusions by us and others [2] ;  [3] that significant equilibrium fractionation between specific coexisting Fe(II)- or Fe(III)-aqueous complexes (e.g., between aqueous Fe(II)(OH)x(aq)and Fe(II)(aq) ion) is capable of producing iron isotope contrasts that can be preserved in nature. This is an important contribution not only because the authors recognize the importance of abiotic equilibrium iron isotope fractionation in nature in contrast to previous assertions [4], but also because it will help to focus discussion on the development and evaluation of experimental approaches that can reveal abiotic fractionation mechanisms. However, in this Comment we propose that the experiments presented in this paper cannot be interpreted as straightforwardly as Johnson et al. contend. In particular, we show that in one of their critical experiments attainment of either isotope mass balance or equilibrium was not demonstrated, and thus the results of that experiment cannot be used to calculate an Fe(II)–Fe(III) equilibrium fractionation factor.

  9. Corrigendum to “Reassessing the importance of the colour-singlet contributions to direct J / ψ + W production at the LHC and the Tevatron” [Phys. Lett. B 726 (2013) 218

    NASA Astrophysics Data System (ADS)

    Lansberg, J. P.; Lorcé, C.

    2014-11-01

    We have found out that our evaluation of the dominant χc feed-down contributions to J / ψ + W (Subsection 5.3) was incorrect. We overlooked the fact that the α αs3 contributions via the colour-singlet transition are infrared sensitive and cannot be evaluated without that from colour-octet transitions. One should in fact compute the contributions at order α αs2 via quark-antiquark annihilation and via a 1[8]3S transition exactly as for the colour-octet contributions to the direct yield of J / ψ + W. Using = (2 J + 1) × 2 ×10-3 GeV3[1], the feed-down contribution for the ATLAS kinematical coverage (see Section 5.1 or [2]) is on the order of 0.45 fb.

  10. Reply to comment on "Direct evidence of ancient shock metamorphism at the site of the 1908 Tunguska event" by Vannucchi et al. (Earth Planet. Sci. Lett. 409 (2015) 168-174)

    NASA Astrophysics Data System (ADS)

    Vannucchi, Paola; Morgan, Jason P.

    2015-04-01

    Our paper (Vannucchi et al., 2015) focuses on geologic evidence for shock metamorphism found at the epicentral region of the 1908 Tunguska event. None of the currently proposed bolide explanations for the 1908 event can produce the shock pressures indicated by the geological evidence described in Vannucchi et al. (2015). If the 1908 event would have generated these pressures over the epicentral region, an observable crater should have also formed. The comment by Melott and Overholt discusses the possibility that a 1908 cometary bolide strike in Tunguska cannot be excluded because of the absence of a detectable 14C increase at this site. They dispute the findings of a recent Liu et al.'s (2014) study that an East Asian comet impact recorded by eyewitness accounts in 773 AD was coincident with a detectable 14C increase in regional South China Sea corals that grew at that time. Their point, whether true or not, is fairly peripheral to our study because the bolide hypothesis for the 1908 Tunguska event, no matter the nature of the bolide itself, does not provide a viable explanation for the geological evidence of shock metamorphism found at the 1908 Tunguska site. Furthermore, as we discuss in our paper, the probability of a prior large impact-shock event having occurred at the site of the 1908 event is extremely low, suggesting that a terrestrial shock-generating mechanism may be linked to the resolution of the Tunguska enigma. Our preferred resolution is that a terrestrial hyper-explosive gas release event, a Verneshot (Morgan et al., 2004), created the large shock-event during the emplacement of the Siberian Traps. In this scenario, the 1908 Tunguska event was due to a much smaller gas-burst that re-used the lithospheric weakness created by the ancient Verneshot. Melott and Overholt's discussion regarding the existence and size of regional and global 14C anomalies related to cometary impacts seems, therefore, to be better addressed in response to the work of Liu et al. (2014), as appears to be done in a paper and preprint that Melott and Overholt self-cite in their comment.

  11. Reply to Comment on: “Direct evidence of ancient shock metamorphism at the site of the 1908 Tunguska event”, by P. Vannucchi et al. [Earth Planet. Sci. Lett. 409 (2015) 168-174

    NASA Astrophysics Data System (ADS)

    Vannucchi, Paola; Morgan, Jason P.

    2015-06-01

    The comment by Schmieder et al. (in press) concentrates on the viability of the quartz planar microdeformation features (PMFs) (or deformation lamellae) presented by Vannucchi et al. (2015) to infer the presence of shock metamorphism in the area of the 1908 Tunguska event. Their comment focuses on two points: The quartz PMFs that are shown in Vannucchi et al. are not produced by shock metamorphism.

  12. Comment on "Direct evidence of ancient shock metamorphism at the site of the 1908 Tunguska event" by Vannucchi et al. (Earth Planet. Sci. Lett. 409 (2015) 168-174)

    NASA Astrophysics Data System (ADS)

    Melott, Adrian L.; Overholt, Andrew C.

    2015-04-01

    An enormous explosion, reportedly aerial, over Tunguska, Siberia in 1908 is commonly thought to be a bolide of some type, possibly a rocky or metallic asteroid, or an icy comet. Vannucchi et al. (2015) present a variety of arguments against the bolide hypothesis. They argue that the lack of unambiguous meteoritic material in the area excludes rocky or metallic asteroids, and that the lack of a 14C anomaly in the geoisotope record excludes a comet. They then present evidence of shock metamorphism in the area which they attribute to a volcanic superexplosion. We show here that the exclusion of a comet based on the isotopic record and the work of Liu et al. (2014) is incorrect.

  13. Addendum to "An update on the classical and quantum harmonic oscillators on the sphere and the hyperbolic plane in polar coordinates" [Phys. Lett. A 379 (26-27) (2015) 1589-1593

    NASA Astrophysics Data System (ADS)

    Quesne, C.

    2016-02-01

    The classical and quantum solutions of a nonlinear model describing harmonic oscillators on the sphere and the hyperbolic plane, derived in polar coordinates in a recent paper (Quesne, 2015) [1], are extended by the inclusion of an isotonic term.

  14. Corrigendum to “Suppression of Υ production in d+Au and Au+Au collisions at √ SNN = 200 GeV" [Phys. Lett. B 735 (2014) 127-137

    SciTech Connect

    Adamczyk, L.

    2015-04-01

    We report measurements of Υ meson production in p + p, d + Au, and Au+Au collisions using the STAR detector at RHIC. We compare the Υ yield to the measured cross section in p + p collisions in order to quantify any modifications of the yield in cold nuclear matter using d + Au data and in hot nuclear matter using Au+Au data separated into three centrality classes. Our p + p measurement is based on three times the statistics of our previous result. We obtain a nuclear modification factor for Upsilon (1S + 2S + 3S) in the rapidity range |y| < 1 in d + Au collisions of RdAu = 0.79 ± 0.24(stat.) ± 0.03(syst.) ± 0.10(p + p syst.). A comparison with models including shadowing and initial state parton energy loss indicates the presence of additional cold-nuclear matter suppression. Similarly, in the top 10% most-central Au + Au collisions, we measure a nuclear modification factor of R AA = 0.49 ±0.1(stat.) ±0.02(syst.) ±0.06(p + p syst.), which is a larger suppression factor than that seen in cold nuclear matter. Our results are consistent with complete suppression of excited-state Upsilon mesons in Au + Au collisions. The additional suppression in Au + Au is consistent with the level expected in model calculations that include the presence of a hot, deconfined Quark–Gluon Plasma. However, understanding the suppression seen in d + Au is still needed before any definitive statements about the nature of the suppression in Au + Au can be made.

  15. Corrigendum to “Suppression of Υ production in d+Au and Au+Au collisions at √ SNN = 200 GeV" [Phys. Lett. B 735 (2014) 127-137

    DOE PAGES

    Adamczyk, L.

    2015-04-01

    We report measurements of Υ meson production in p + p, d + Au, and Au+Au collisions using the STAR detector at RHIC. We compare the Υ yield to the measured cross section in p + p collisions in order to quantify any modifications of the yield in cold nuclear matter using d + Au data and in hot nuclear matter using Au+Au data separated into three centrality classes. Our p + p measurement is based on three times the statistics of our previous result. We obtain a nuclear modification factor for Upsilon (1S + 2S + 3S) in themore » rapidity range |y| < 1 in d + Au collisions of RdAu = 0.79 ± 0.24(stat.) ± 0.03(syst.) ± 0.10(p + p syst.). A comparison with models including shadowing and initial state parton energy loss indicates the presence of additional cold-nuclear matter suppression. Similarly, in the top 10% most-central Au + Au collisions, we measure a nuclear modification factor of R AA = 0.49 ±0.1(stat.) ±0.02(syst.) ±0.06(p + p syst.), which is a larger suppression factor than that seen in cold nuclear matter. Our results are consistent with complete suppression of excited-state Upsilon mesons in Au + Au collisions. The additional suppression in Au + Au is consistent with the level expected in model calculations that include the presence of a hot, deconfined Quark–Gluon Plasma. However, understanding the suppression seen in d + Au is still needed before any definitive statements about the nature of the suppression in Au + Au can be made.« less

  16. Comment on: “Exact bound state solutions of the s-wave Klein Gordon equation with the generalized Hulthén potential” [Phys. Lett. A 331 (2004) 374

    NASA Astrophysics Data System (ADS)

    Benamira, F.; Guechi, L.; Zouache, A.

    2007-08-01

    The supersymmetric quantum mechanical method employed by Gang Chen and co-workers to solve the problem of the s states of a Klein Gordon particle under the action of generalized vector plus scalar Hulthén-type potentials is shown inadequate since only one of their solutions remains valid for q⩾1 and 1αlnq

  17. Erratum: Evidence of b-jet quenching in PbPb collisions at sNN=2.76TeV [Phys. Rev. Lett. 113 , 132301 (2014)

    SciTech Connect

    Chatrchyan, S.

    2015-07-10

    In our Letter, there was a component of the statistical uncertainty from the simulated PbPb Monte Carlo samples. This uncertainty was not propagated to all of the results. Figures 3 and 4 have been updated to reflect this source of uncertainty. In this case, the statistical uncertainties remain smaller than the systematic uncertainties in all cases such that the conclusions of the Letter are unaltered.

  18. Commentary on "Goodacre R, Timmins ÉM, Rooney PJ, Rowland JJ, Kell DB: Rapid identification of Streptococcus and Enterococcus species using diffuse reflectance-absorbance Fourier transform infrared spectroscopy and artificial neural networks. FEMS Microbiol Lett 1996; 140:233-239", the most cited paper in the Journal for that year.

    PubMed

    Goodacre, Royston; Kell, Douglas B

    2017-01-26

    This is an invited review/commentary by the first and last authors of a paper that was the most cited in FEMS Microbiology Letters for 1996, presently showing in excess of 150 citations at Web of Science, and over 200 at Google Scholar. It was the first paper in which diffuse-reflectance-absorbance FT-IR spectroscopy was used with a supervised learning method in the form of artificial neural networks, and showed that this combination could succeed in discriminating a series of closely related, clinically relevant, Gram-positive bacterial strains.

  19. Corrigendum to "The 16 April 2016, MW 7.8 (MS 7.5) Ecuador earthquake: A quasi-repeat of the 1942 MS 7.5 earthquake and partial re-rupture of the 1906 MS 8.6 Colombia-Ecuador earthquake" [Earth Planet. Sci. Lett. 454 (2016) 248-258

    NASA Astrophysics Data System (ADS)

    Ye, Lingling; Kanamori, Hiroo; Avouac, Jean-Philippe; Li, Linyan; Cheung, Kwok Fai; Lay, Thorne

    2017-01-01

    In response to inquiries from readers of the paper, we have reexamined the time series recorded at DART 32067 and confirmed the existence of a data gap in the recording between 19 and 34 min after the earthquake initiation time. The recorded time series also includes short-period ground oscillations and long-period tidal fluctuations. We originally had run the records through a script that re-sampled the data to uniform intervals and filtered out the tidal signals. This inadvertently interpolated across the data gap and distorted the signal. We misinterpreted the interpolated feature as the second arrival of the recorded tsunami in the top panel of Figs. 3e, S3e, and S4e. The recorded waveform in the corrected version of Fig. 3e appended herein has instead been de-tided using the OTIS Regional Tidal Solutions (http://volkov.oce.orst.edu/tides/PO.html).

  20. 77 FR 67381 - Government-Owned Inventions; Availability for Licensing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-09

    ... nanoring and an RNA nanotube. Nano Lett. 2007 Aug;7(8): 2328- 34. Intellectual Property: HHS Reference No... hexagonal nanoring and an RNA nanotube. Nano Lett. 2007 Aug;7(8): 2328- 34. Intellectual Property:...

  1. Investigation of Impurities in type-II InAs/GaSb Superlattices via Capacitance-Voltage Measurement

    DTIC Science & Technology

    2013-07-17

    Phys. Lett. 92, 071102 (2008). 17T. V. Chandrasekhar Rao, J. Antoszewski, L. Faraone , J. B. Rodriguez, E. Plis, and S. Krishna, Appl. Phys. Lett. 92...1993). 25G. A. Umana-Membreno, B. Klein, H. Kala, J. Antoszewski, N. Gautam, M. N. Kutty, E. Plis, S. Krishna, and L. Faraone , Appl. Phys. Lett. 101

  2. Relativistic Chiral Kinetic Theory

    NASA Astrophysics Data System (ADS)

    Stephanov, Mikhail

    2016-12-01

    This very brief review of the recent progress in chiral kinetic theory is based on the results of Refs. [J.-Y. Chen, D. T. Son, M. A. Stephanov, H.-U. Yee, Y. Yin, Lorentz Invariance in Chiral Kinetic Theory, Phys. Rev. Lett. 113 (18) (2014) 182302. doi:10.1103/PhysRevLett.113.182302; J.-Y. Chen, D. T. Son, M. A. Stephanov, Collisions in Chiral Kinetic Theory, Phys. Rev. Lett. 115 (2) (2015) 021601. doi: 10.1103/PhysRevLett.115.021601; M. A. Stephanov, H.-U. Yee, The no-drag frame for anomalous chiral fluid, Phys. Rev. Lett. 116 (12) (2016) 122302. doi: 10.1103/PhysRevLett.116.122302].

  3. Mercury Bromide Laser Research.

    DTIC Science & Technology

    1981-05-04

    Discharge", Optics Lett., 2(3), (March 1978). 7. R. Burnham, "Discharge Pumped Mercuric Halide Dissociation Lasers", Appl. Phys. Lett., 33: 15 (July 1978...laser and fluorescence signals. Neutral density filters served to prevent saturation of the detector during the laser measurements. F. Laser Output as a...REFERENCES . E. J. Schimitschek and J. E. Celto, " Mercuric Bromide Dissociation Laser in an Electric Discharge," Optics Lett. 2(3), March 1978. This

  4. Band-Edge Excitons in PbSe Nanocrystals and Nanorods

    DTIC Science & Technology

    2010-12-06

    P. Alivisatos, Nano Lett. 7, 179 2007. 2 B. Dubertret, P. Skourides, D. J. Norris, V. Noireaux, A. H. Bri- vanlou, and A. Libchaber, Science 298...and V. I. Klimov, Nano Lett. 6, 424 2006. 9 A. J. Nozik, Chem. Phys. Lett. 457, 3 2008. 10 W. Ma, J. M. Luther, H. Zheng, Y. Wu, and A. P...Alivisatos, Nano Lett. 9, 1699 2009. 11 J. J. Choi, Y. F. Lim, M. B. Santiago-Berrios, M. Oh, B. R. Hyun, L. Sun, A. C. Bartnik, A. Goedhart, G. G

  5. High-Efficiency and High-Power Mid-Wave Infrared Cascade Lasers

    DTIC Science & Technology

    2009-08-01

    22, pp. 218–221, 2007. [37] S. Katz , A. Friedrich , G. Boehm, and M.-C. Amann, Appl. Phys. Lett., vol. 92, p. 181103, 2008. [38] Sirtori, F...Spagnolo, G. Scamarcio, H. Page, and C. Sirtori, Appl. Phys. Lett. 84, 3690 (2004). [87] S. Katz , A. Friedrich , G. Boehm, and M.-C. Amann, Appl...S. N. G. Chu, and A. Y. Cho, Appl. Phys. Lett. 78, 25 (2001). [24] S. Katz , A. Vizbaras, G. Boehm, and M.-C. Amann, Appl. Phys. Lett. 94, 151106

  6. Optoelectronics Generation and Detection of Intense Terahertz Electromagnetic Pulses.

    DTIC Science & Technology

    2007-11-02

    been shown to be [31] I(a 3’(o)). _ 1 [1+ (21cc/(ood) sin y - sin2 Y 1 6 )0=0- 2ito 1- n27cc/o).d) -s (15) The analytical evaluation of the integral in...Rink, Phys. Rev. Lett. 59, 1018 (1987). [13] E. Yablonovitch, J.P. Heritage, D.E. Aspnes, and Y . Yafet, Phys. Rev. Lett. 63, 976 (1989); Y . Yafet, E... Chamoun , Appl. Phys. Lett. 53, 2254 (1988). [18] A. E. Iverson, G. M. Wysin, D. L. Smith, and A. Redondo, Appl. Phys. Lett. 52, 2148 (1988). T.F

  7. Experimental Investigation of Hot Electron and Related Effects in Gallium (Aluminum) Arsenide Devices

    DTIC Science & Technology

    1989-01-01

    Dev. Lett . EDL-3, 297 (1982). 7. S. Adachi, J. Appl. Phys . 58, RI ( 1985 ). 1 8. P.M. Solomon, S.L Wright and C. Lanza, Superlattices and...Appl. Phys . 63, 5004 (1988). 3 23. D. Arnold, K. Hess and G.J. lafrate, Appl. Phys . Lett . 53,373 (1988). 24. O.A. Mezrin and S.I. Troshkov, Sov . Phys ...Hess, IEEE Elec. Dev. Lett . EDL-6, 199 ( 1985 ). 1 28. K. Brennan, K. Hess and F. Capasso, Appl. Phys . Lett . 50, 1897 (1987). 29. W. Schockley, Solid

  8. Millimeter-Wave Acoustic Transducers

    DTIC Science & Technology

    1990-04-01

    Phys . Rev. Lett . 54, 1810 ( 1985 ). 28. S.A. Akhmanov, V.V. Fadeev, R.V. Khokhlov, and O.N. Chunaev, Sov . Phys . JETP Lett . 6, 85...Acoust. Soc. Am. 66, 1801 (1979). 41 . F.P. Milliken, K.W. Schwartz and C.W. Smith, Phys . Rev. Lett . 48, 1204 (1982). 42 . T.E. Huber and H.J. Maris... Phys . Lett . 7, 264 (1965). 7. K.H. Yang, P.L. Richards, and Y.R. Shen, J. Appl. Phys . 44, 1417 (1973). 8. H.K. Wong, G.K. Wong and J.B.

  9. Development of GaN-Based Nanostructure Photon Emitters

    DTIC Science & Technology

    2009-12-19

    6] Satoshi Watanabe, Norihide Yamada, Masakazu Nagashima, Yusuke Ueki, Chiharu Sasaki, Yoichi Yamada, Tsunemasa Taguchi, Kazuyuki Tadatomo, Hiroaki Okagawa, and Hiromitsu Kudo Appl. Phys. Lett. 83, 4906 (2003)

  10. Comment on ``Magic Numbers in Exotic Nuclei and Spin-Isospin Properties of the NN Interaction''

    NASA Astrophysics Data System (ADS)

    Zuker, A. P.

    2003-10-01

    A Comment on the Letter by

    Takaharu Otsuka et al., Phys. Rev. Lett.PRLTAO0031-9007 87, 082502 (2001)10.1103/PhysRevLett.87.082502
    . The authors of the Letter offer a Reply.

  11. Template-Growth of Highly Ordered Carbon Nanotube Arrays on Silicon POSTPRINT

    DTIC Science & Technology

    2006-09-01

    carbon nanotube on each nanonickel dot,” Appl. Phys. Lett., vol. 75, pp. 1086–1088, 1999. [7] H. Masuda and K. Fukuda, “Ordered metal nanohole arrays...vol. 124, pp. 307–310, 2001. [10] T. Iwasaki, T. Motoi, and T. Den, “Multiwalled carbon nanotubes growth in anodic alumina nanoholes ,” Appl. Phys. Lett

  12. Compact Magnetic Antennas for Directional Excitation of Surface Plasmons

    DTIC Science & Technology

    2012-07-01

    Steininger, G.; Koch, M.; von Plessen, G.; Feldmann, J. Launching surface plasmons into nanoholes in metal films. Appl. Phys. Lett. 2000, 76, 140−142...plasmons at single nanoholes in Au films. Appl. Phys. Lett. 2004, 85, 467−469. (14) Baudrion, A.-L.; et al. Coupling efficiency of light to surface

  13. Photon Antibunching in the Fluorescence of a Single Dye Molecule Trapped in a Solid

    DTIC Science & Technology

    1992-06-08

    Properties of Solids , S. Nudelman and S. S. Mitra, eds. (Plenum, New York, 1969), p. 607. 1O. K. K. Rebane, Impurity Spectra of Solids (Plenum, New York...Phys. Rev. Lett. 62, 2535-2538 (1989). 8. M. Orrit and J. Bernard, Phys. Rev. Lett. 65, 2716-2719 (1990). 9. R. If. Silsbee, Ch. 21 of Optical

  14. Low-Energy Positron-Matter Interactions Using Trap-Based Beams

    DTIC Science & Technology

    2002-06-24

    Gilbert, J. P. Sullivan, J. P. Marler , L. D. Barnes, P. Schmidt, S. J. Buckman,’ and C. M. Surko Department of Physics, University of California, San...Phys. Rev. Lett. 82, 5032-5035 (1999). [15] Sullivan, J. P., Marler , J. P., Gilbert, S. J., et al., Phys. Rev. Lett. 87, 073201-4 (2001). [16] Gilbert

  15. Comment on ``Cluster Formation of Transmembrane Proteins Due to Hydrophobic Mismatching''

    NASA Astrophysics Data System (ADS)

    de Meyer, Frédérick; Smit, Berend

    2009-05-01

    A Comment on the Letter by Ulrich Schmidt, Gernot Guigas, and Matthias Weiss, Phys. Rev. Lett.PRLTAO0031-9007 101, 128104 (2008)10.1103/PhysRevLett.101.128104. The authors of the Letter offer a Reply.

  16. Interpretation of the I-Regime and transport associated with relevant heavy particle modes

    SciTech Connect

    Coppi, B.; Zhou, T.

    2012-01-15

    The excitation of a novel kind of heavy particle [B. Coppi et al., Phys. Rev. Lett. 17, 377 (1966); B. Coppi and T. Zhou, MIT(LNS) Report HEP 09/04, 2009, Cambridge, MA [Phys. Lett. A 375, 2916 (2011)

  17. Preparation of Entangled Polymer Melts of Various Architecture for Coarse-Grained Models

    DTIC Science & Technology

    2011-09-01

    thermostat, see the original papers by Hoogerbrugge and Koelman (7) and Español and Warren (8). 3. Generation of Initial Structure Using gel 3.1...1–19. 7. Koelman, J. M. V. A.; Hoogerbrugge, P. J. Europhys. Lett. 1993, 21, 363–368. 8. Español , P.; Warren, P. B. Europhys. Lett. 1995, 30, 191

  18. Comment on ``Avalanches and Non-Gaussian Fluctuations of the Global Velocity of Imbibition Fronts''

    NASA Astrophysics Data System (ADS)

    Pruessner, Gunnar

    2010-07-01

    A Comment on the Letter by Ramon Planet, Stéphane Santucci, and Jordi Ortín, Phys. Rev. Lett.PRLTAO0031-9007 102, 094502 (2009)10.1103/PhysRevLett.102.094502. The authors of the Letter offer a Reply.

  19. Coherent Beam Combining Element for Five 150-W Fiber Lasers by Volume Bragg Gratings in PTR Glass

    DTIC Science & Technology

    2011-08-03

    single-lobed beam from a diode laser array in an external cavity,” Appl. Phys. Lett. 50, 1465-1467 ( 1987 ). 18. J.R. Leger, G. Mowry, and D. Chen...Modal analysis of a Talbot cavity,” Appl. Phys. Lett. 64, 2937- 2939 (1994).   20 Approved for Public Release; Distribution unlimited 19. S.Yu

  20. Comment on ``Ordering of Small Particles in One-Dimensional Coherent Structures by Time-Periodic Flows''

    NASA Astrophysics Data System (ADS)

    Kuhlmann, Hendrik C.; Muldoon, Frank H.

    2012-06-01

    A Comment on the Letter by D. O. Pushkin, D. E. Melnikov, and V. M. Shevtsova Phys. Rev. Lett.PRLTAO0031-9007 106, 234501 (2011)10.1103/PhysRevLett.106.234501. The authors of the Letter offer a Reply.

  1. Current Collapse Induced in AlGaN/GaN High-Electron-Mobility Transistors by Bias Stress

    DTIC Science & Technology

    2003-08-25

    structure where the traps causing current collapse can be passivated by forming H-defect complexes. Hierro et al.7 have shown, for example, that deep...Lett. 75, 4016 ~1999!. 7 A. Hierro , S. A. Ringel, M. Hansen, J. S. Speck, U. K. Mishra, and S. P. DenBaars, Appl. Phys. Lett. 77, 1499 ~2000!. 8 S. J

  2. Non-Abelian effects in a quadrupole system rotating around two axes

    SciTech Connect

    Zwanziger, J.W.; Koenig, M.; Pines, A. Department of Chemistry, University of California, Berkeley, CA )

    1990-09-01

    The {sup 35}Cl nuclear quadrupole resonance spectrum of a single crystal of sodium chlorate (R. Tycko, Phys. Rev. Lett. 58, 2281 (1987)) rotating about two axes reflects a non-Abelian gauge potential. This gauge potential is an example of Wilczek and Zee's (Phys. Rev. Lett. 52, 2111 (1984)) generalization of Berry's phase to the adiabatic transport of degenerate states.

  3. Small Structures and Superlattices for Future High-Speed Devices

    DTIC Science & Technology

    1986-10-01

    that significant var- I’D. Jogai and K. L. Wang, Appl. Phys. Lett. 46, 167 (1985). 11) Bardeen , Phys. Rev. Lett. 6, 57 (196 1). iations in the...Molecular Beam Epitazy, edited by John C. Bean (The Electrochemiical Society, Pennington, 1985), p. 268. 13A. Ishizaka, K. Nakagawa, and Y. Shiraki

  4. Self-Aligned, Extremely High Frequency III-V Metal-Oxide-Semiconductor Field-Effect Transistors on Rigid and Flexible Substrates

    DTIC Science & Technology

    2012-06-29

    Goffman , M. F.; Bourgoin, J.-P. Appl. Phys. Lett. 2007, 90, 233108. (5) Nougaret, L.; Happy, H.; Dambrine, G.; Derycke, V.; Bourgoin, J.-P.; Green, A. A...Krishna, S.; Chueh, Y.-L.; Guo, J.; Javey, A. Nano Lett. 2012, 12, 2060−2066. (27) Chimot, N.; Derycke, V.; Goffman , M. F.; Bourgoin, J. P.; Happy, H

  5. Magneto-Optics of GaAs Quantum Wire Lattices Grown by Selective-Area MOVPE

    DTIC Science & Technology

    2006-01-01

    flux. We can suggest that this oscillation is the Altshuler-Aronov- Spivak (AAS) effect [6] with a periodicity of B2/2. Unfortunately, a lack of...Lett. 84, 2664 (2004). [6] B.L. Altshuler, A.G. Aronov, and B.Z. Spivak , Pis’ma Zh. Eksp. Teor. Fiz. 33, 101 (1981) [JETP Lett. 33, 94 (1981)]. 133

  6. Phase-Locking and Coherent Power Combining of Broadband Linearly Chirped Optical Waves

    DTIC Science & Technology

    2012-11-05

    T. Y. Fan, and A. Sanchez, “Coherent beam combining and phase noise measurements of ytterbium fiber amplifiers,” Opt. Lett. 29, 474–476 (2004). 14. C...Lett. 42, 1024–1025 (2006). 15. S. J. Augst, J. K. Ranka, T. Y. Fan, and A. Sanchez, “Beam combining of ytterbium fiber amplifiers (Invited),” J. Opt

  7. EDITORIAL: 'Best article' prize for the 5th anniversary of Environmental Research Letters 'Best article' prize for the 5th anniversary of Environmental Research Letters

    NASA Astrophysics Data System (ADS)

    Kammen, Dan; Wright, Guillaume

    2011-12-01

    To celebrate the 5th anniversary of Environmental Research Letters (ERL) the publishers of the journal, IOP Publishing, have awarded a prize for the five best articles published in ERL since the journal began in 2006. The procedure for deciding the winning articles was as thorough as possible to ensure that the most outstanding articles would win the prize. A shortlist of 25 nominated research articles, five for each year since ERL was launched, which were chosen based on a range of criteria including novelty, scientific impact, readership, broad appeal and wider media coverage, was selected. The ERL Editorial Board then assessed and rated these 25 articles in order to choose a winning article for each year. We would like to announce that the following articles have been awarded ERL's 5th anniversary best article prize: 2006/7 The Bodélé depression: a single spot in the Sahara that provides most of the mineral dust to the Amazon forest Ilan Koren, Yoram J Kaufman, Richard Washington, Martin C Todd, Yinon Rudich, J Vanderlei Martins and Daniel Rosenfeld 2006 Environ. Res. Lett. 1 014005 2008 Causes and impacts of the 2005 Amazon drought Ning Zeng, Jin-Ho Yoon, Jose A Marengo, Ajit Subramaniam, Carlos A Nobre, Annarita Mariotti and J David Neelin 2008 Environ. Res. Lett. 3 014002 2009 How difficult is it to recover from dangerous levels of global warming? J A Lowe, C Huntingford, S C B Raper, C D Jones, S K Liddicoat and L K Gohar 2009 Environ. Res. Lett. 4 014012 2010 Is physical water scarcity a new phenomenon? Global assessment of water shortage over the last two millennia Matti Kummu, Philip J Ward, Hans de Moel and Olli Varis 2010 Environ. Res. Lett. 5 034006 2011 Implications of urban structure on carbon consumption in metropolitan areas Jukka Heinonen and Seppo Junnila 2011 Environ. Res. Lett. 6 014018 Our congratulations go to these authors. In recognition of their outstanding work, we are delighted to offer all of the authors of the winning articles free

  8. Power Enhancement of a Rubidium Vapor Laser With a Master Oscillator Power Amplifier (Postprint)

    DTIC Science & Technology

    2009-09-15

    Phys. Lett. 34, 655-658 (1979). 5 . W. F. Krupke, R. J. Beach, V. K. Kanz, and S. A. Payne, “Resonance transition 795-nm rubidium laser,” Opt. Lett...Kanz, and W. F. Krupke, “Multimode-diode-pumped gas (alkali-vapor) laser,” Opt. Lett. 31 , 353-355 (2006). 10. Y. Wang, T. Kasamatsu, Y.Zheng, H...OPTICS EXPRESS 8050 #94531 - $15.00 USD Received 7 Apr 2008; revised 4 May 2008; accepted 7 May 2008; published 19 May 2008 (DPAL) started rapidly gaining

  9. OM85. Basic Properties of Optical Materials Summaries of Papers.

    DTIC Science & Technology

    1985-05-01

    D. Sarid , Phys. Rev. Lett. 47, 1927 (1981); J. C. Quail, J. G. Rako, and H. J. Simon, Opt. Lett.-8, 377 (1983); A. E. Craig, G. A. Olson, and D... Sarid , Opt. Lett. 8, 380 (1983); Y. Kuwamura, M. Fukui, and 0. Tado, J. Phys. Soc. Jp’n 52, 2350 (1983). * 8. J. C. Quail, J. G. Rako, H. J. Simon, and R...glasses contain no oxygen and are dis- tinguished from the fluoroberyllates by the absence of beryllium . In addition to their scientific interest as a

  10. Proceedings for the Alaska Meeting on Fundamental Optical Processes in Semiconductors (AMFOPS 󈧅) Held in Girdwood, Alaska on August 5-10, 2001

    DTIC Science & Technology

    2007-11-02

    o . I (L MM ( La. M2 L I 478 8 i4 N 6 i:& e From Quantum Kinetics to the Carrier-Wave Regime Martin Wegener Institut fir Angewandte Physik...Steinbach, M.U. Wehner, M. Wegener , T. Marschner, and W. Stolz, Phys. Rev. Lett. 75, 2188 (1995). [2] M.U. Wehner, M.H. Ulm, D.S. Chemla, and M. Wegener ...Phys. Rev. Lett. 80, 1992 (1998). [3] W.A. Hhlgel, M.F. Heinrich, M. Wegener , Q.T. Vu, L. Bdnyai, and H. Haug, Phys. Rev. Lett. 83, 3313 (1999). [4

  11. Theoretical Investigation of Point Defects of Mercury Cadmium Telluride.

    DTIC Science & Technology

    1985-11-01

    Phys .- JETP 43(2), 305 (1976). 41 . M. H. Cohen, and V. Heine, Phys . Rev. 122, 1821 (1961). 42 . B. J. Austin, V. Heind, and L...450 (1958). -12-77 57. E. M. Gershenzon, G. N. Gol’tsman, and A. P. Mel’nikov, Sov . Phys .- JETP Lett . 14, 185 (1971). 58. M. A. Gilleo, P. J. Bailey... Phys . Rev. Lett . 41 (13), 892 (1978). 15. J. Bernholc, N. 0. Lipari, and S. T. Pantelides, Phys . Rev. Lett . 41 (13), 895 (1978)

  12. Cooperative Effects and Intrinsic Optical Bistability in Collections of Atoms

    DTIC Science & Technology

    1989-11-01

    Sov . Phys . JETP 38, 1100 (1974). 17. Il.J. Carmichael and D.F. Walls, J. Phys . B: Atom. Molec. Phys ...268 ( 1985 ). 8. D.A.B. Miller, A.G. Gossard and W. Wiegmann, Optics Lett . 9. 162 (1984). 9. F. Hennenberger and fl. Rossmann, Phys . Stat. Solidi B121...Hollberg, 3. Yurke, J.C. Mertz and J.F. Valey, Phys . Rev. Lett . 55, 2409 ( 1985 ). 28. L.A. Wu, H.J. Kimble, J.L. Hall and H. Wu, Phys . Rev. Lett .

  13. Theoretical-Experimental Analysis of the Effects of Grain Boundaries on the Electrical Properties of SOI (Silicon-on-Insulator) MOSFETS.

    DTIC Science & Technology

    1983-11-01

    Insulating Substrate", IEEE Electron Device Lett., vol. EDL-l, pp. 206-208, Oct. 1980. 2. B.-Y. Tsaur, M. W. Geis, J. C. C. Fan, D. J. Silversmith , and P...Electron Device Lett., vol. EDL-I, pp. 206-208, Oct. 1980. 3. B.-Y. Tsaur, M. W. Geis, J. C. C. Fan, D. J. Silversmith , and P. W. Mountain, "n-Channel Deep...Lett., vol. EDL-I, pp. 206-208, Oct. 1980. 2. B.-Y. Tsaur, M. W. Geis, J. C. C. Fan, D. J. Silversmith , and R. W. Mountain, "n-Channel Deep-Depletion

  14. Raman Studies of Surface Temperature in Laser-Heated Semiconductors.

    DTIC Science & Technology

    1985-02-07

    and A. Compaan, Appi. Phys. Lett. 38, 3 (1981). 3. M. C. Lee, It. W. Lo, A. Aydinli , and A. Compaan, Appl. Phys. Lett. 38, 7 (1981). 4. A. Compaan, H...W. Lo, A. Aydinli , and M. C. Lee, Laser and Electron- Beam Solid Interactions and Materials Procesin ed. by Gibbons. Hess and Sigmon (Elsevier North...Holland, Amsterdam, 1981), p. 15. ~.A. Aydinli , H. W. La, M. C. Lee, and A. Comnpaan, Phys. Rev. Lett. 4 46, 25 (1981). 6. A. Aydinli , A. Compaan, H

  15. Origin of the Inner Ring in Photoluminescence Patterns of Quantum Well Excitons

    DTIC Science & Technology

    2006-03-15

    855. [3] Hagn M., Zrenner A., Böhm G. and Weimann G., Appl. Phys. Lett., 67 (1995) 232. [4] Negoita V., Snoke D. W . and Eberl K., Phys. Rev. B, 60...418 (2002) 751. [7] Vörös Z., Balili R., Snoke D. W ., Pfeiffer L. and West K., Phys. Rev. Lett., 94 (2005) 226401. [8] Butov L. V., J. Phys...L., Littlewood P. B. and Haug H., Phys. Rev. B, 59 (1999) 5032. [12] Ivanov A. L., Europhys. Lett., 59 (2002) 586. [13] Butov L. V., Zrenner A

  16. Active Nematics Are Intrinsically Phase Separated

    NASA Astrophysics Data System (ADS)

    Mishra, Shradha; Ramaswamy, Sriram

    2006-09-01

    Two-dimensional nonequilibrium nematic steady states, as found in agitated granular-rod monolayers or films of orientable amoeboid cells, were predicted [Europhys. Lett. 62, 196 (2003)EULEEJ0295-507510.1209/epl/i2003-00346-7] to have giant number fluctuations, with the standard deviation proportional to the mean. We show numerically that the steady state of such systems is macroscopically phase separated, yet dominated by fluctuations, as in the Das-Barma model [Phys. Rev. Lett. 85, 1602 (2000)PRLTAO0031-900710.1103/PhysRevLett.85.1602]. We suggest experimental tests of our findings in granular and living-cell systems.

  17. Comment on {open_quote}{open_quote}In-plane lattice reconstruction of Cu(001){close_quote}{close_quote}

    SciTech Connect

    Baddorf, A.P.; Swan, A.K.; Wendelken, J.F.

    1996-05-01

    A Comment on the Letter by S. M{umlt u}ller {ital et} {ital al}., Phys. Rev. Lett. {bold 75}, 2959 (1995). The authors of the Letter offer a Reply. {copyright} {ital 1996 The American Physical Society.}

  18. Comment on {open_quote}{open_quote}In-plane lattice reconstruction of Cu(100){close_quote}{close_quote}

    SciTech Connect

    Robinson, I.K.; Moritz, W.; Jona, F.; Van Hove, M.A. |||

    1996-05-01

    A Comment on the Letter by S. M{umlt u}ller {ital et} {ital al}., Phys. Rev. Lett. {bold 75}, 2959 (1995). The authors of the Letter offer a reply. {copyright} {ital 1996 The American Physical Society.}

  19. Noise induces rare events in granular media.

    PubMed

    Khain, Evgeniy; Sander, Leonard M

    2016-09-01

    The granular Leidenfrost effect [B. Meerson, et al., Phys. Rev. Lett. 91, 024301 (2003)PRLTAO0031-900710.1103/PhysRevLett.91.024301; P. Eshuis et al., Phys. Rev. Lett. 95, 258001 (2005)PRLTAO0031-900710.1103/PhysRevLett.95.258001] is the levitation of a mass of granular matter when a wall below the grains is vibrated, giving rise to a hot granular gas below the cluster. We find by simulation that for a range of parameters the system is bistable: the levitated cluster can occasionally break and give rise to two clusters and a hot granular gas above and below. We use techniques from the theory of rare events to compute the mean transition time for breaking to occur. This requires the introduction of a two-component reaction coordinate.

  20. Dual Hemisphere Investigations of Ionospheric Irregularities that Disrupt Radio Communications and Navigation

    DTIC Science & Technology

    2016-07-25

    Mouginot, J. , Morgan, D., & Gurnett, The equ ivalent slab thickness of Mars ’ ionosphere: Implications for thermospheric temperature Geophys. Res. Lett. , 42, 3560-3568, doi:l0.1002/2015GL063096, 2015. 8

  1. Plasmonic Lens Made of Multiple Concentric Metallic Rings under Radially Polarized Illumination

    DTIC Science & Technology

    2009-08-05

    Sheppard, C.; Chong, C. T. Nat. Photonics 2008, 2, 501–505. (22) Palik , E. D. Handbook of Optical Constants of Solids; Academic Press: San Diego, CA, 1998. NL903145P Nano Lett., Vol. 9, No. 12, 2009 4325

  2. Comment on ``Single-Mode Spontaneous Emission from a Single Quantum Dot in a Three-Dimensional Microcavity''

    NASA Astrophysics Data System (ADS)

    Gayral, B.; Gérard, J.-M.

    2003-06-01

    A Comment on the Letter by

    G. S. Solomon, M. Pelton, and Y. Yamamoto, Phys. Rev. Lett.PRLTAO0031-9007 86, 3903 (2001)
    . The authors of the Letter offer a Reply.

  3. Absence of a Dirac cone in silicene on Ag(111): First-principles density functional calculations with a modified effective band structure technique

    NASA Astrophysics Data System (ADS)

    Wang, Yun-Peng; Cheng, Hai-Ping

    2013-06-01

    We investigate the currently debated issue of the existence of the Dirac cone in silicene on an Ag(111) surface, using first-principles calculations based on density functional theory to obtain the band structure. By unfolding the band structure in the Brillouin zone of a supercell to that of a primitive cell, followed by projecting onto Ag and silicene subsystems, we demonstrate that the Dirac cone in silicene on Ag(111) is destroyed. Our results clearly indicate that the linear dispersions observed in both angular-resolved photoemission spectroscopy [P. Vogt , Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.108.155501 108, 155501 (2012)] and scanning tunneling spectroscopy [L. Chen , Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.109.056804 109, 056804 (2012)] come from the Ag substrate and not from silicene.

  4. DNA-Based Chiral Composites with Enhancement of Chirooptic and NLO Effects for NIMS Applications

    DTIC Science & Technology

    2008-11-24

    A. Miniewicz, A. Kochalska, J. Mysliwiec, A. Samoc, M. Samoc, and J. G. Grote, Deoxyribonucleic acid-based photochromic material for fast dynamic holography, Appl. Phys. Lett. 91, 041118-1/041118-3 (2007).

  5. Nonlocal distillation based on multisetting Bell inequality

    NASA Astrophysics Data System (ADS)

    Ye, Xiang-Jun; Deng, Dong-Ling; Chen, Jing-Ling

    2012-12-01

    Inspired by the recent works of Foster [Phys. Rev. Lett.0031-900710.1103/PhysRevLett.102.120401 102, 120401 (2009)] and Brunner [Phys. Rev. Lett.0031-900710.1103/PhysRevLett.102.160403 102, 160403 (2009)], we present a nonlocality distillation protocol for two three-level (qutrit) systems in the framework of generalized nonsignaling theories. Our protocol is based on a three-setting Bell inequality. It works efficiently for a specific class of three-input-three-output nonlocal boxes. In the asymptotic limit, all these nonlocal boxes can be distilled to the maximally nonlocal box defined by the inequality and nonsignaling constraints. Then we introduce a contracting protocol that reduces these boxes to the so-called “correlated nonlocal boxes.” As a result, our three-input-three-output nonlocal boxes also make communication complexity trivial and appear very unlikely to exist in nature.

  6. Comment on {open_quote}{open_quote}Confirmation of the Sigma Meson{close_quote}{close_quote}

    SciTech Connect

    Isgur, N.; Speth, J.

    1996-09-01

    A Comment on the Letter by Nils A. T{umlt o}rnqvist and Matts Roos, Phys. Rev. Lett. {bold 76}, 1575 (1996). The authors of the Letter offer a Reply. {copyright} {ital 1996 The American Physical Society.}

  7. Comment on {open_quotes}Confirmation of the Sigma Meson{close_quote}{close_quote}

    SciTech Connect

    Harada, M.; Sannino, F.; Schechter, J.; Sannino, F.

    1997-02-01

    A Comment on the Letter by Nils A. Tornqvist and Matts Roos, Phys.Rev.Lett.{bold 76}, 1575 (1996). The authors of the Letter offer a Reply. {copyright} {ital 1997} {ital The American Physical Society}

  8. Blobs in the framework of drift wave dynamics

    NASA Astrophysics Data System (ADS)

    Zhang, Yanzeng; Krasheninnikov, S. I.

    2016-12-01

    Analytic solutions for blob-like structures obtained in S. I. Krasheninnikov [Phys. Lett. A 380, 3905 (2016)], are examined in detail. Numerical solutions for the cases where analytic consideration is not possible are provided.

  9. A Trio of Brownian Donkeys

    NASA Astrophysics Data System (ADS)

    van den Broeck, C.; Cleuren, B.; Kawai, R.; Kambon, M.

    A previously introduced model (B. Cleuren and C. Van den Broeck, Europhys. Lett. 54, 1 (2001)) is studied numerically. Pure negative mobility is found for the minimum number of three interacting walkers.

  10. Genetics Home Reference: hereditary fructose intolerance

    MedlinePlus

    ... EP, Zee T, Tolan DR. Increased prevalence of mutant null alleles that cause hereditary fructose intolerance in ... F. Structural and functional analysis of aldolase B mutants related to hereditary fructose intolerance. FEBS Lett. 2002 ...

  11. Phonon Squeezing by Raman Scattering.

    NASA Astrophysics Data System (ADS)

    Nori, Franco; Hu, Xuedong

    1997-03-01

    We have studied quantum fluctuation properties of a crystal lattice, and proposed several mechanisms to achieve this goal(X. Hu and F. Nori, Phys. Rev. Lett. 76, 2294 (1996); Phys. Rev. B 53, 2419 (1996); preprint.).

  12. Dual geometric worm algorithm for two-dimensional discrete classical lattice models.

    PubMed

    Hitchcock, Peter; Sørensen, Erik S; Alet, Fabien

    2004-01-01

    We present a dual geometrical worm algorithm for two-dimensional Ising models. The existence of such dual algorithms was first pointed out by Prokof'ev and Svistunov [Phys. Rev. Lett. 87, 160601 (2001)

  13. Thermodynamic constraints on the amplitude of quantum oscillations

    NASA Astrophysics Data System (ADS)

    Shekhter, Arkady; Modic, K. A.; McDonald, R. D.; Ramshaw, B. J.

    2017-03-01

    Magneto-quantum oscillation experiments in high-temperature superconductors show a strong thermally induced suppression of the oscillation amplitude approaching the critical dopings [B. J. Ramshaw et al., Science 348, 317 (2014), 10.1126/science.aaa4990; H. Shishido et al., Phys. Rev. Lett. 104, 057008 (2010), 10.1103/PhysRevLett.104.057008; P. Walmsley et al., Phys. Rev. Lett. 110, 257002 (2013), 10.1103/PhysRevLett.110.257002]—in support of a quantum-critical origin of their phase diagrams. We suggest that, in addition to a thermodynamic mass enhancement, these experiments may directly indicate the increasing role of quantum fluctuations that suppress the quantum oscillation amplitude through inelastic scattering. We show that the traditional theoretical approaches beyond Lifshitz-Kosevich to calculate the oscillation amplitude in correlated metals result in a contradiction with the third law of thermodynamics and suggest a way to rectify this problem.

  14. Study on PCB Properties of Epoxy Based Nanocomposites with Different Types of Layered Hybrid Materials

    DTIC Science & Technology

    2006-07-26

    and M.L. Roukes, J. Appl. Phys. 95, 2682 (2004) [5] X.T. Wu, J. Hui, M. Young, P. Kayatta, J. Wong, D. Kennith, J. Zhe and C. Warde, Appl. Phys. Lett...Phys. Lett., 69, 2653 (1996) [15] D.W. Carr and H.G. Craighead, J.Vac. Sci. Technol. B, 15, 2760 (1997) [16] H.X. Tang , X.M.H. Huang, M.L. Roukes

  15. Tunable Magnetic Exchange Interactions in Manganese-Doped Inverted Core-Shell ZnSe-CdSe Nanocrystals

    DTIC Science & Technology

    2009-01-01

    interaction. c, A diagram showing the relative energies of quantum -confined electron and hole levels in the nanocrystal (Ee and Eh) and the occupied...Nano Lett. 4, 1485–1488 (2004). 8. Bacher, G. et al. Optical spectroscopy on individual CdSe/ZnMnSe quantum dots . Appl. Phys. Lett. 79, 524–527 (2001...route towards magnetically active quantum dots . With a view towards enhancing carrier/paramagnetic ion spin interactions, colloidal nanocrystals

  16. Semiconductor Nanocrystal Photonics

    DTIC Science & Technology

    2005-08-31

    D. Krauss, C. B. Poitras, and M. Lipson, " Energy transfer between colloidal semiconductor quantum dots in an optical microcavity," (submitted, 2006...Phys. Lett. 82, 4032 (2003). J. J. Peterson and T. D. Krauss, "Fluorescence Spectroscopy of Single Lead Sulfide Quantum Dots ," Nano Lett. (in press...Guo, Xiaowei Teng, Hong Yang, Todd D. Krauss, Carl B. Poitras, and Michal Lipson, "Enhanced Energy Transfer between Colloidal Semiconductor Quantum

  17. Polymeric Smart Skin Materials: Concepts, Materials, and Devices

    DTIC Science & Technology

    2006-03-31

    McCann, J. and Xia, Y., Nano Lett. 2005, 5, 913-916 (also see the highlight in Materials Today, June, 2005). 7. Use of Electrospinning to Directly...11. Direct Fabrication of Composite and Ceramic Hollow Nanofibers by Electrospinning , Li, D. and Xia, Y., Nano Lett. 2004, 5, 933-938 (also see...with silicon photonics producing a new generation of nano /microscale device technology in a thin film format. Project research is playing a critical role

  18. Kitaev's Zd-code threshold estimates

    NASA Astrophysics Data System (ADS)

    Duclos-Cianci, Guillaume; Poulin, David

    2013-06-01

    We study the quantum error correction threshold of Kitaev's toric code over the group Zd subject to a generalized bit-flip noise. This problem requires special decoding techniques, and for this purpose we generalize the renormalization-group method we introduced previously [G. Duclos-Cianci and D. Poulin, Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.104.050504 104, 050504 (2010) and IEEE Information Theory Workshop, Dublin (2010), p. 1] for Z2 topological codes.

  19. Plateaus in the Dispersion of Two-Dimensional Magnetoplasmons in GaAs Quantum Wells: Theoretical Evidence of an Electron Reservoir

    NASA Astrophysics Data System (ADS)

    Toyoda, Tadashi; Hiraiwa, Nobuyoshi; Fukuda, Taturo; Koizumi, Hideki

    2008-01-01

    The filling-factor-dependent plateau-type dispersion of the long-wavelength magnetoplasmon in high-mobility two-dimensional electron system observed by Holland et al. [Phys. Rev. Lett. 93, 186804 (2004)PRLTAO0031-900710.1103/PhysRevLett.93.186804] can be explained by the well-established semiclassical dispersion, by adopting the electron reservoir hypothesis previously proposed in order to explain the integer quantum Hall effects.

  20. Spin Phase Gate Based on Optically Generated Geometric Phases in a Self-Assembled Quantum Dot

    DTIC Science & Technology

    2011-01-01

    Xiaodong Xu, Bo Sun, and D. G. Steel H. M. Randall Laboratory, The University of Michigan, Ann Arbor, MI 48109 Phone:(734) 764-4469 Fax: (734) 763-9694...during a Cyclic Quantum Evolution”, Phys. Rev. Lett. 58, 1593 (1987) 9. Xiaodong Xu et al, “Fast Spin State Initialization in a Singly Charged InAs-GaAs Quantum Dot by Optical Cooling”, Phys. Rev. Lett. 99, 097401 (2007)

  1. A 2D Rods-in-Air Square-Lattice Photonic Crystal Optical Switch

    DTIC Science & Technology

    2009-03-01

    photonic crystal switches, IEEE Photon. Technol. Lett. 18 (2) (2006) 358–360. [8] Y. Kanamori , K. Inoue, K. Horie, K. Hane, Photonic crystal switch by...Waikoloa, Hawaii, USA, pp. 107–108. [9] K. Umemori, Y. Kanamori , K. Hane, A photonic crystal waveguide switch with a movable bridge slab, in: Proceedings of...Umemori, Yoshiaki Kanamori , Kazuhiro Hane, Photonic crystal waveguide switch with a microelectromechanical actuator, Appl. Phys. Lett. 89 (2) (2006

  2. Microdischarges for Phased Arrays of Low Coherence Emitters, and Microchip and Microsphere Lasers

    DTIC Science & Technology

    2008-02-01

    061121 (2006). 4. S.-J. Park, T. M. Spinka, and J. G. Eden, AppI . Phys. Lett., 89, 031502 (2006). 5. J. P. Bocuf, L. C. Pitchford, and K. H. Schoenbach...devices: Luminous efficacy above 6 lumens/watt 22 with Ne/50% Xe mixtures and a green phosphor," AppI . Phys. Lett., vol. 88, 061121, February 6, 2006. 38

  3. Technology and Application of Indium Phosphide and Related Semiconductors

    DTIC Science & Technology

    1989-03-01

    Compounds, Las iegas, 1986, Inst. Phys. Conf. Ser. No. 83, p. 295 III,C.5: H. Jung and P. Marschall, Electron. Lett. 23 (1987) 1010 III,C.6: H. S. Marek and H...Cld.8: C. E. Zah, J. S. Osinski , C. Caneau, S. G. Menocal, L. A. Reith, J. Salzman, F. K. Shokoohi, and T. P. Lee, Electron. Lett. 23 (1987) 990

  4. Intermittency in two-dimensional Ekman-Navier-Stokes turbulence

    NASA Astrophysics Data System (ADS)

    Boffetta, G.; Celani, A.; Musacchio, S.; Vergassola, M.

    2002-08-01

    We study the statistics of the vorticity field in two-dimensional Navier-Stokes turbulence with linear Ekman friction. We show that the small-scale vorticity fluctuations are intermittent, as conjectured by Bernard [Europhys. Lett. 50, 333 (2000)] and Nam et al. [Phys. Rev. Lett. 84, 5134 (2000)]. The small-scale statistics of vorticity fluctuations coincide with that of a passive scalar with finite lifetime transported by the velocity field itself.

  5. Finite-key-size security of the Phoenix-Barnett-Chefles 2000 quantum-key-distribution protocol

    NASA Astrophysics Data System (ADS)

    Mafu, Mhlambululi; Garapo, Kevin; Petruccione, Francesco

    2014-09-01

    The postselection technique was introduced by Christandl, König, and Renner [Phys. Rev. Lett. 102, 020504 (2009), 10.1103/PhysRevLett.102.020504] in order to simplify the security of quantum-key-distribution schemes. Here, we present how it can be applied to study the security of the Phoenix-Barnett-Chefles 2000 trine-state protocol, a symmetric version of the Bennett 1992 protocol.

  6. Optical Arbitrary Waveform Generators Based on Temporal and Spectral Shaping of Optical Pulses in Nonlinear Metamaterials

    DTIC Science & Technology

    2011-06-01

    States, namely: • Prof. Alejandro B. Aceves and Prof. Ildar Gabitov at the Department of Mathematics of the Southern Methodist University, in...Wabnitz has been visiting Prof. Alejandro B. Aceves at the Department of Mathematics of the Southern Methodist University, in Dallas. The research work...2004). [17] M. Guasoni, M. Conforti, and C. De Angelis, Opt. Lett. 33, 2362 (2008). [18] S. H. Nam, E. Ulin- Avila , G. Bartal, and X. Zhang, Opt. Lett

  7. Visible Chemical Lasers: Reactions of Metastable Oxygen and the Study of the Red Yoshida Reaction

    DTIC Science & Technology

    1992-05-31

    Lamarre, •, Y. Louvet, M. Nota, D. Pigache, A.J. Ross and M. Setra Europhysics Lett. 12 569 (1990) 13 H.P. Yang, Y. Qin, T.J. Cui, Q.N. Yuan, X.B. Xie ... Q . Zhuang and C.H. Zhang Chem. Phys. Lett. 191 130 (1992) 14 F. Dienstback, F.P. Emmenegger and C.W. Sclapher Hefv. Chem. Acta 60 2460 (1977) Table

  8. Electron Paramagnetic Resonance Saturation Characteristics of Pristine and Doped Polyacetylenes.

    DTIC Science & Technology

    1981-11-11

    Polym. Sci., Polym. Lett. Ed. .17, 263 (1979). 34. B. Francois, M. Bernard and J.J. Andre, J. Chem. Phys., in press. 35. J.M. Pochan , H.W. Gibson and F.C...Bailey, J. Polym. Sci., Polym. Lett. Ed. 18, 447 (1980). 36. J.M. Pochan , D.F. Pochan , H. Rommelmann and H.W. Gibson, Macromolecules 14, 110 (1981

  9. A pointwise estimate for fractionary derivatives with applications to partial differential equations.

    PubMed

    Cordoba, Antonio; Cordoba, Diego

    2003-12-23

    This article emphasizes the role played by a remarkable pointwise inequality satisfied by fractionary derivatives in order to obtain maximum principles and Lp-decay of solutions of several interesting partial differential equations. In particular, there are applications to quasigeostrophic flows, in two space variables with critical viscosity, that model the Eckman pumping [see Baroud, Ch. N., Plapp, B. B., She, Z. S. & Swinney, H. L. (2002) Phys. Rev. Lett. 88, 114501 and Constantin, P. (2002) Phys. Rev. Lett. 89, 184501].

  10. An Elegant Low-cost Materials Solution for Achieving Low Insertion Loss, Affordable Tunable Filters for Next Generation Mobile Communications Platforms

    DTIC Science & Technology

    2009-04-01

    Ervin, M. H. J. Appl . Phys. 2001, 89, 6336. 9 17. Cole, M. W.; Podpirka, A; Ramanathan , S. Invited Presentation: Symposium on Ferroelectrics... Appl . Phys. Lett. 1997, 70, 3053. 10 6. Transitions 1. Referred Journal Articles: 2 • Podpirka, A.; Cole, M. W.; Ramanathan , S. Effect of...Meletis, E. I.; Chang, H. Y. Appl . Phys. Lett. 2001, 78, 652. 2. Kumar, A.; Manavalan, S.; Gurumurthy, V.; Jeedigunta, S.; Weller, T. Mater. Sci. Eng

  11. Photothermal Imaging of Defects in Metals and Ceramics.

    DTIC Science & Technology

    1986-10-01

    24] G. Busse and A. Rosencwaig, " Subsurface imaging with photoacoustics," Appl. Phys. Lett., Vol. 36, p. 815, 1980. [25] G. S. Cargill, "Electron...and A. Rosencwaig, Subsurface imaging with photoacoustics, Appl. Phys. Lett. 36:815 (1980). 12. G. S. Cargill, Electron-acoustic microscopy, in...1979. different orientations." Harwell AERE Report. RI 1686. Apr. 1985. [35] G. Busse and A. Rosencwaig, " Subsurface imaging with photo- [641 R. J

  12. Electronic Properties of High-Temperature Superconductors

    DTIC Science & Technology

    1989-08-01

    presented at the International Superconductor Applications Convention, San Francisco, 1989 (unpublished). SJ. %I. Tranquada , S. 2M. Heald, A. R. Moodenbaugh...Lett. 62, 102 (1989). 151 J. M. Tranquada , D. E. Cox, WV. Kunnmann, H. Moudden, G. Shirane, %I. Suenaga, P. Zolliker, D. Vaknin, S. K. Sinha, M. S...Alvarez, A. J. Jacobson, and D. C. Johnston, Phys. Rev. Lett. 60, 136 (1988); J. M. Tranquada , A. H. Nioudden, A. 1. Goldman, P. Zolliker, D. E. Cox, G

  13. A Density Functional That Accounts for Medium-Range Correlation Energies in Organic Chemistry (PREPRINT)

    DTIC Science & Technology

    2006-11-03

    previous functionals. A related example, in particular a case of DFT failing to account for stereoelectronic effects, was provided by Schreiner et...8, 3631. (4) Schreiner , P. R.; Fokin, A. A.; Pascal Jr., R. A.; de Meijere, A. Org. Lett. 2006, 8, 3635. (5) Perdew, J. P.; Burke, K.; Ernzerhof...M. Phys. Rev. Lett 1996, 77, 3865. (6) Staroverov, V. N.; Scuseria, G. E.; Tao , J.; Perdew, J. P. J. Chem. Phys. 2003, 119, 12129. (7) Becke, A

  14. Quantum Coherent Electron-Phonon Nanolaboratories

    DTIC Science & Technology

    2006-05-31

    published as “Single-crystal aluminum nitride nanomechanical resonators”, A.N. Cleland, M. Pophristic and I. Ferguson , Appl. Phys. Lett. 79, 2070 (2001...nanostructured phononic crystals”, Phys. Rev. B 64, 172301 (2001) A.N. Cleland, M. Pophristic and I. Ferguson , “Single-crystal aluminum nitride...Phys. Lett. 79, 1202 ~2001!. 6 M. J. Kelly, R. J. Brown, C. G. Smith, D. A. Wharam, M. Pepper , H. Ahmed, D. G. Hasko, D. C. Peacock, J. E. F. Frost, and

  15. Power of an optical Maxwell's demon in the presence of photon-number correlations

    NASA Astrophysics Data System (ADS)

    Shu, Angeline; Dai, Jibo; Scarani, Valerio

    2017-02-01

    We study how correlations affect the performance of the simulator of a Maxwell's demon demonstrated in a recent optical experiment [M. D. Vidrighin, O. Dahlsten, M. Barbieri, M. S. Kim, V. Vedral, and I. A. Walmsley, Phys. Rev. Lett. 116, 050401 (2016), 10.1103/PhysRevLett.116.050401]. The power of the demon is found to be enhanced or hindered, depending on the nature of the correlation, in close analogy to the situation faced by a thermal demon.

  16. Multiple Channel Laser Beam Combination and Phasing Using Stimulated Brillouin Scattering in Optical Fibers

    DTIC Science & Technology

    2005-12-01

    light in stimulated Mandel’shtam–Brillouin scattering,” JETP Lett ., 15, 109-112, 1972. 41 . Hellwarth, R. W., “Phase conjugation by stimulated...interferometry with wavefront-reversing mirrors,” Sov . Phys . JETP , 52, 847-851, 1980. 79. Valley, M., G. Lombardi, and R. Aprahamian, “Beam...discharge,” Appl. Phys . Lett ., 86, 111104, 2005. 13. Lange, Mathew A., “Kinetics of the electric discharge pumped oxygen-iodine laser,” Sixth

  17. The Effects of Stoichiometry on the Mechanical Properties of Icosahedral Boron Carbide Under Loading

    DTIC Science & Technology

    2012-11-19

    failing to comply with a collection of information if it does not display a currently valid OMB control number. 1. REPORT DATE 19 NOV 2012 2. REPORT...32] with temperature and pressure controlled using algorithms due to Berendsen [33]. For each MD trajectory, atomic forces and stresses were computed...Phys. Rev. Lett. 77 3865 [29] Doll K 2009 Mol. Phys. 108 223 [30] Wang J and Yip S 1993 Phys. Rev. Lett. 71 4182 [31] Kimizuka H, Ogata S, Li J and

  18. Determining Exchange Splitting in a Magnetic Semiconductor by Spin-Filter Tunneling

    DTIC Science & Technology

    2008-11-20

    the DOE under DE-AC06-76RL01830, and by NSF under DMR- 0210915. [1] P. Wachter , in Handbook on the Physics and Chemistry of Rare Earths, edited by K...Lett. 70, 853 (1993). [4] T. S. Santos and J. S. Moodera, Phys. Rev. B 69, 241203(R) (2004). [5] G. Busch, P. Junod, and P. Wachter , Phys. Lett. 12, 11

  19. Determination of the 5d6s3D1 State Lifetime and Blackbody Radiation Clock Shift in Yb

    DTIC Science & Technology

    2012-08-03

    transition due to room temperature blackbody radiation is dominated by a static Stark effect , which was recently measured to high accuracy [J. A. Shennan et...Stark effect , which was recently measured to high accuracy [J. A. Sherman et al., Phys. Rev. Lett. 108, 153002 (2012)]. However, room temperature... effect , which was recently measured to high accuracy [J. A. Sherman et al., Phys. Rev. Lett. 108, 153002 (2012)]. However, room temperature

  20. Comment on {open_quotes}Experimental Fusion Barrier Distributions Reflecting Projectile Octupole State Coupling to Prolate and Oblate Target Nuclei{close_quotes}

    SciTech Connect

    Dasso, C.H.; Dasso, C.H.; Fernandez-Niello, J.

    1997-05-01

    The authors comment on the Letter by J.D. Bierman et al., Phys. Rev. Lett. 76, 1587(1996), and show the method by which they have been constructed is not the most appropriate. A Comment on the Letter by J.D. Bierman, {ital et al. }, Phys.Rev.Lett.{bold 76}, 1587 (1996). The authors of the Letter offer a Reply. {copyright} {ital 1997} {ital The American Physical Society}

  1. 1:N Space Division Switches for Optical Routing, Reconfigurable Interconnections, and Time and Wavelength-Division Switching Applications

    DTIC Science & Technology

    1998-05-01

    valuable technical collaboration with Dr . Michael Parker of the Rome Laboratory Photonics Center on this research program, and technical discussions and...D. Choquette, K. M. Geib , H. C. Chui, B. E. Hammons, H. Q. Hou, T. J. Drummond, and R. Hull, Appl. Phys. Lett 69 1385 (1996). [16] K. D...Choquette, W. W. Chow, M. Hagerott Crawford, K. M. Geib , and R. P. Schneider, Jr., Appl. Phys. Lett. 68 3689 (1996). [17] H. Tsuda, K. Nonaka, K

  2. High Speed Compound Semiconductor Devices in Layered Structures.

    DTIC Science & Technology

    1986-02-25

    Wiegman , Phys. Rev. Letts. 54, 1570 -" (1985). - (3) A.F.J. Levi, J.R. Hayes and P.M. Platzman and W.W,egman, Phys. Rev. Lets. 55, 2071 (1985). (4) 1.R...Hayes, A.F.J. Levi, andW. Wiegman , lectronLett. 20, 851, (1984). (5) S. Muto, K. Imamura, N. Yokoyma, S. Hiyamizu and H. Nishi, Electron Lbtt., 21, 555

  3. Tunable anomalous Andreev reflection and triplet pairings in spin-orbit-coupled graphene

    NASA Astrophysics Data System (ADS)

    Beiranvand, Razieh; Hamzehpour, Hossein; Alidoust, Mohammad

    2016-09-01

    We theoretically study scattering process and superconducting triplet correlations in a graphene junction comprised of ferromagnet-RSO-superconductor in which RSO stands for a region with Rashba spin-orbit interaction. Our results reveal spin-polarized subgap transport through the system due to an anomalous equal-spin Andreev reflection in addition to conventional backscatterings. We calculate equal- and opposite-spin pair correlations near the F-RSO interface and demonstrate direct link of the anomalous Andreev reflection and equal-spin pairings arisen due to the proximity effect in the presence of RSO interaction. Moreover, we show that the amplitude of anomalous Andreev reflection, and thus the triplet pairings, are experimentally controllable when incorporating the influences of both tunable strain and Fermi level in the nonsuperconducting region. Our findings can be confirmed by a conductance spectroscopy experiment and may provide more insights into the proximity-induced RSO coupling in graphene layers reported recently in experiments [A. Avsar et al., Nat. Commun. 5, 4875 (2014), 10.1038/ncomms5875; Z. Wang et al., Phys. Rev. Lett. 114, 016603 (2015), 10.1103/PhysRevLett.114.016603; J. B. S. Mendes et al., Phys. Rev. Lett. 115, 226601 (2015), 10.1103/PhysRevLett.115.226601; S. Dushenko et al., Phys. Rev. Lett. 116, 166102 (2016), 10.1103/PhysRevLett.116.166102].

  4. Comment on ``Attractive forces between ions in quantum plasmas: Failure of linearized quantum hydrodynamics''

    NASA Astrophysics Data System (ADS)

    Shukla, P. K.; Eliasson, B.; Akbari-Moghanjoughi, M.

    2013-03-01

    In a recent paper, Bonitz, Pehlke, and Schoof [Phys. Rev. E10.1103/PhysRevE.87.033105 87, 033105 (2013)], hereafter referred to as BPS, have raised some points against the Shukla-Eliasson attractive potential [P. K. Shukla and B. Eliasson, Phys. Rev. Lett.0031-900710.1103/PhysRevLett.108.165007 108, 165007 (2012); P. K. Shukla and B. Eliasson, Phys. Rev. Lett.0031-900710.1103/PhysRevLett.108.219902 108, 219902(E) (2012); P. K. Shukla and B. Eliasson, Phys. Rev. Lett.10.1103/PhysRevLett.109.019901 109, 019901(E) (2012)], hereafter referred to as SEAP, around a stationary test charge in a quantum plasma. Our objective here is to discuss the insufficiency of the BPS reasoning concerning the applicability of the linearized quantum hydrodynamic theory, as well as to point out the shortcomings in BPS’s arguments and to suggest how to salvage BPS’s density functional theory and simulations, which have failed to produce results that correctly match with that of Shukla and Eliasson.

  5. Relativistically induced transparency acceleration of light ions by an ultrashort laser pulse interacting with a heavy-ion-plasma density gradient

    NASA Astrophysics Data System (ADS)

    Sahai, Aakash A.; Tsung, Frank S.; Tableman, Adam R.; Mori, Warren B.; Katsouleas, Thomas C.

    2013-10-01

    The relativistically induced transparency acceleration (RITA) scheme of proton and ion acceleration using laser-plasma interactions is introduced, modeled, and compared to the existing schemes. Protons are accelerated with femtosecond relativistic pulses to produce quasimonoenergetic bunches with controllable peak energy. The RITA scheme works by a relativistic laser inducing transparency [Akhiezer and Polovin, Zh. Eksp. Teor. Fiz 30, 915 (1956); Kaw and Dawson, Phys. FluidsPFLDAS0031-917110.1063/1.1692942 13, 472 (1970); Max and Perkins, Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.27.1342 27, 1342 (1971)] to densities higher than the cold-electron critical density, while the background heavy ions are stationary. The rising laser pulse creates a traveling acceleration structure at the relativistic critical density by ponderomotively [Lindl and Kaw, Phys. FluidsPFLDAS0031-917110.1063/1.1693437 14, 371 (1971); Silva , Phys. Rev. E1063-651X10.1103/PhysRevE.59.2273 59, 2273 (1999)] driving a local electron density inflation, creating an electron snowplow and a co-propagating electrostatic potential. The snowplow advances with a velocity determined by the rate of the rise of the laser's intensity envelope and the heavy-ion-plasma density gradient scale length. The rising laser is incrementally rendered transparent to higher densities such that the relativistic-electron plasma frequency is resonant with the laser frequency. In the snowplow frame, trace density protons reflect off the electrostatic potential and get snowplowed, while the heavier background ions are relatively unperturbed. Quasimonoenergetic bunches of velocity equal to twice the snowplow velocity can be obtained and tuned by controlling the snowplow velocity using laser-plasma parameters. An analytical model for the proton energy as a function of laser intensity, rise time, and plasma density gradient is developed and compared to 1D and 2D PIC OSIRIS [Fonseca , Lect. Note Comput. Sci.9783

  6. Hamiltonian theory of the FQHE edge: Collective modes

    NASA Astrophysics Data System (ADS)

    Nguyen, Hoang; Joglekar, Yogesh; Murthy, Ganpathy

    2003-03-01

    We study the collective modes of the fractional quantum Hall edge states using the Hamiltonian formalism [1]. While most theoretical approaches start with an effective bosonic theory [2] in which all fermions are integrated out (an exception is the approach based on Chern-Simons theory [3]), the Hamiltonian theory treats the composite fermions as fully interacting. We obtain the gapless edge-modes using a conserving approximation which respects the constraints [4]. The implications of our study to the tunneling experiments into the edge of a fractional quantum Hall system [5] are discussed. [1] R.Shankar and G.Murthy, Phys.Rev.Lett. 79, 4437 (1997). [2] X.-G.Wen, Phys.Rev.Lett. 64, 2206 (1990); D.-H.Lee and X.-G.Wen, cond-mat/9809160; A.Lopez and E.Fradkin, Phys.Rev.B 59, 15323 (1999); U. Zulicke and A.H.MacDonald, Phys.Rev.B 60, 1837 (1999); V.J.Goldman and E.V.Tsiper, Phys.Rev.Lett. 86, 5841 (2001); S.S.Mandal and J.K.Jain, Phys.Rev.Lett. 89, 096801 (2002). [3] L.S.Levitov, A.V.Shytov, and B.I.Halperin, Phys. Rev. B 64, 075322 (2001). [4] N. Read, Phys.Rev.B 58, 16262 (1998); G. Murthy, Phys.Rev.B 64, 195310 (2001). [5] A.M.Chang et.al., Phys.Rev.Lett. 86, 143 (2000).

  7. Thermal Conductance Measurement of Metal-CNT Composites using Micro-Sized Suspended Structure

    NASA Astrophysics Data System (ADS)

    Suh, Ki Sung; Bak, Jung Hoon; Lee, Byung Yang; Hong, Seunghun; Park, Yun Daniel

    2008-03-01

    As CNTs have a unique structure and remarkable physical properties, CNT composites have attracted much attention from many researchers. Especially the thermal properties of CNTs and their composite materials have been studied intensively, because CNT has very good thermal transport properties [1-5]. For example, thermal conductivity of CNT is known to be much larger than that of metals such as Ag, Au, Cu and Al. To study the thermal conductance of metal-CNT composites, we have fabricated the micro-sized suspended structures. By using e-beam lithography and metallization, two thermometers have been patterned on the GaAs substrates. Thermal links made of metal or metal-CNT composite also have been patterned between the two thermometers. Then GaAs substrate has been under-etched to form suspended structures. We will show the fabrication methods and measurement scheme using these microstructures. ^* parkyd@phya.snu.ac.kr [1] J.A. Eastman et al., Appl. Phys. Lett. 78, 718 (2001). [2] S.U.S. Choi et al., Appl. Phys. Lett. 79, 2252 (2001). [3] M.J. Biercuk et al., Appl. Phys. Lett. 80, 2767 (2002). [4] R. Ramasubramaniam et al., Appl. Phys. Lett. 80, 4647 (2003). [5] H.Q. Xia et al., Appl. Phys. Lett. 94, 4967 (2003).

  8. Improvements to laser wakefield accelerated electron beam stability, divergence, and energy spread using three-dimensional printed two-stage gas cell targets

    SciTech Connect

    Vargas, M.; Schumaker, W.; He, Z.-H.; Zhao, Z.; Behm, K.; Chvykov, V.; Hou, B.; Krushelnick, K.; Maksimchuk, A.; Yanovsky, V.; Thomas, A. G. R.

    2014-04-28

    High intensity, short pulse lasers can be used to accelerate electrons to ultra-relativistic energies via laser wakefield acceleration (LWFA) [T. Tajima and J. M. Dawson, Phys. Rev. Lett. 43, 267 (1979)]. Recently, it was shown that separating the injection and acceleration processes into two distinct stages could prove beneficial in obtaining stable, high energy electron beams [Gonsalves et al., Nat. Phys. 7, 862 (2011); Liu et al., Phys. Rev. Lett. 107, 035001 (2011); Pollock et al., Phys. Rev. Lett. 107, 045001 (2011)]. Here, we use a stereolithography based 3D printer to produce two-stage gas targets for LWFA experiments on the HERCULES laser system at the University of Michigan. We demonstrate substantial improvements to the divergence, pointing stability, and energy spread of a laser wakefield accelerated electron beam compared with a single-stage gas cell or gas jet target.

  9. Twenty Years of Magnon Bose Condensation and Spin Current Superfluidity in 3He-B

    NASA Astrophysics Data System (ADS)

    Volovik, G. E.

    2008-12-01

    20 years ago a new quantum state of matter was discovered and identified (Borovik-Romanov et al. in JETP Lett. 40:1033, 1984; 45:124, 1987; 47:478, 1988; Fomin in JETP Lett. 40:1037, 1984; Borovik-Romanov et al. in Sov. Phys. JETP 61:1199, 1985; Fomin in Sov. Phys. JETP 61:1207, 1985; Bunkov et al. in JETP Lett. 43:168, 1986). The observed dynamic quantum state of spin precession in superfluid 3He-B bears the properties of spin current superfluidity, Bose condensation of spin waves—magnons, off-diagonal long-range order and related phenomena of quantum coherence.

  10. How to upload a physical quantum state into correlation space

    SciTech Connect

    Morimae, Tomoyuki

    2011-04-15

    In the framework of the computational tensor network [Phys. Rev. Lett. 98, 220503 (2007)], the quantum computation is performed in a virtual linear space called the correlation space. It was recently shown [Phys. Rev. Lett. 103, 050503 (2009)] that a state in a correlation space can be downloaded to the real physical space. In this paper, conversely, we study how to upload a state from a real physical space to the correlation space. After showing the impossibility of cloning a state between a real physical space and the correlation space, we propose a simple teleportation-like method of uploading. This method also enables the Gottesman-Chuang gate teleportation trick and entanglement swapping in the virtual-real hybrid setting. Furthermore, compared with the inverse of the downloading method by Cai et al. [Phys. Rev. Lett. 103, 050503 (2009)], which also works to upload, the proposed uploading method has several advantages.

  11. Photocurrent Measurements of Carbon Nanotube PN Junctions

    NASA Astrophysics Data System (ADS)

    Gabor, Nathaniel; Zhong, Zhaohui; Bosnick, Ken; Park, Jiwoong; McEuen, Paul

    2007-03-01

    Gated p-n junctions in semiconducting nanotubes have recently drawn much attention for their electronic and optoelectronic characteristics [1,2,3]. We investigate the photocurrent response at a nanotube gated p-n junction using a focused laser illumination source. We find that the photocurrent at zero source-drain bias increases linearly with optical power for the component of light along the length of the nanotube. Scanned photocurrent imaging demonstrates that carrier generation occurs primarily between the p- and n- type segments of the device. Measurements in an optical cryostat down to 4K reveal large photoresponse and step-like structure in the reverse bias photocurrent. These results show that nanotube p-n junctions are highly sensitive, nanoscale photodetectors. [1] J.U. Lee et al, App. Phys. Lett. 85, 145 (2004). [2] J.U. Lee, App. Phys. Lett. 87, 073101 (2005). [3] K. Bosnick et al, App. Phys. Lett. 89, 163121 (2006).

  12. Improvements to laser wakefield accelerated electron beam stability, divergence, and energy spread using three-dimensional printed two-stage gas cell targets

    NASA Astrophysics Data System (ADS)

    Vargas, M.; Schumaker, W.; He, Z.-H.; Zhao, Z.; Behm, K.; Chvykov, V.; Hou, B.; Krushelnick, K.; Maksimchuk, A.; Yanovsky, V.; Thomas, A. G. R.

    2014-04-01

    High intensity, short pulse lasers can be used to accelerate electrons to ultra-relativistic energies via laser wakefield acceleration (LWFA) [T. Tajima and J. M. Dawson, Phys. Rev. Lett. 43, 267 (1979)]. Recently, it was shown that separating the injection and acceleration processes into two distinct stages could prove beneficial in obtaining stable, high energy electron beams [Gonsalves et al., Nat. Phys. 7, 862 (2011); Liu et al., Phys. Rev. Lett. 107, 035001 (2011); Pollock et al., Phys. Rev. Lett. 107, 045001 (2011)]. Here, we use a stereolithography based 3D printer to produce two-stage gas targets for LWFA experiments on the HERCULES laser system at the University of Michigan. We demonstrate substantial improvements to the divergence, pointing stability, and energy spread of a laser wakefield accelerated electron beam compared with a single-stage gas cell or gas jet target.

  13. Effect of Compton scattering on the double-to-single photoionization ratio in helium

    NASA Astrophysics Data System (ADS)

    Sagurton, M.; Bartlett, R. J.; Samson, J. A. R.; He, Z. X.; Morgan, D.

    1995-10-01

    The effect of Compton scattering on the ratio of double-to-single ionization from photon impact in helium has been measured for 2.1<=hν<=5.5 keV using a time-of-flight ion spectrometer with a high relative collection efficiency for Compton ions. Single ionization from Compton scattering is found to contribute measurably to a reduction in the ionization ratio for hν>~3.5 keV. Our measurements are compared with predictions based on recent calculations of the single and double ionization cross sections for photoabsorption and Compton scattering by Hino et al. [Phys. Rev. A 48, 1271 (1993), Phys. Rev. Lett. 72, 1620 (1994)], Andersson et al. [Phys. Rev. Lett. 71, 50 (1993)], and Surić et al. [Phys. Rev. Lett. 73, 790 (1994)].

  14. Time-reversal Aharonov-Casher effect in mesoscopic rings with spin-orbit interaction

    NASA Astrophysics Data System (ADS)

    Zhu, Zhenyue; Wang, Yong; Xia, Ke; Xie, X. C.; Ma, Zhongshui

    2007-09-01

    The time-reversal Aharonov-Casher (AC) [Phys. Rev. Lett. 53, 319 (1984)] interference effect in the mesoscopic ring structures, based on the experiment in Phys. Rev. Lett. 97, 196803 (2006), is studied theoretically. The transmission curves are calculated from the scattering matrix formalism, and the time-reversal AC interference frequency is singled out from the Fourier spectra in numerical simulations. This frequency is in good agreement with analytical result. It is also shown that in the absence of magnetic field, the Altshuler-Aronov-Spivak type [JETP Lett. 33, 94 (1981)] (time reversal) AC interference is retained under the influence of strong disorder, while the Aharonov-Bohm type [Phys. Rev. 115, 485 (1959)] AC interference is suppressed.

  15. Magnetic control of ferroelectric interfaces

    NASA Astrophysics Data System (ADS)

    Dussan, S.; Kumar, A.; Katiyar, R. S.; Priya, S.; Scott, J. F.

    2011-05-01

    We report the strong magnetic field dependence of ferroelectric PbZr0.52Ti0.48O3 (PZT) films on half-metallic oxide La0.67Sr0.33MnO3 (LSMO) electrodes. As the field H is increased, the hysteresis loop first broadens (becomes lossy) and then disappears at approximately H = 0.34 T and ambient temperatures. The data are compared with the theories of Pirč et al (2009 Phys. Rev. B 79 214114), Parish and Littlewood (2008 Phys. Rev. Lett. 101 166602) and Catalan (2006 Appl. Phys. Lett. 88 102902). The results are interpreted as due not to magnetocapacitance but to the sharp negative magnetoresistance in LSMO at low magnetic fields (Hwang et al 1996 Phys. Rev. Lett. 77 2041), which causes a dramatic increase in leakage current through the PZT.

  16. The Amigó paradigm of forbidden/missing patterns: a detailed analysis

    NASA Astrophysics Data System (ADS)

    Rosso, O. A.; Carpi, L. C.; Saco, P. M.; Ravetti, M. G.; Larrondo, H. A.; Plastino, A.

    2012-12-01

    We deal here with the issue of determinism versus randomness in time series (TS), with the goal of identifying their relative importance in a given TS. To this end we extend (i) the use of ordinal patterns based probability distribution functions associated to a TS [C. Bandt and B. Pompe, Phys. Rev. Lett. 88, 174102 (2002)] and (ii) the so-called Amigó paradigm of forbidden/missing patterns [J.M. Amigó et al., Europhys. Lett. 79, 50001 (2007)], to analyze deterministic finite TS contaminated with strong additive noises of different correlation-degree. Useful information on the deterministic component of the original time series is obtained with the help of the so-called causal entropy-complexity plane [O.A. Rosso et al., Phys. Rev. Lett. 99, 154102 (2007)].

  17. Analytical solutions of the two-dimensional Dirac equation for a topological channel intersection

    NASA Astrophysics Data System (ADS)

    Anglin, J. R.; Schulz, A.

    2017-01-01

    Numerical simulations in a tight-binding model have shown that an intersection of topologically protected one-dimensional chiral channels can function as a beam splitter for noninteracting fermions on a two-dimensional lattice [Qiao, Jung, and MacDonald, Nano Lett. 11, 3453 (2011), 10.1021/nl201941f; Qiao et al., Phys. Rev. Lett. 112, 206601 (2014), 10.1103/PhysRevLett.112.206601]. Here we confirm this result analytically in the corresponding continuum k .p model, by solving the associated two-dimensional Dirac equation, in the presence of a "checkerboard" potential that provides a right-angled intersection between two zero-line modes. The method by which we obtain our analytical solutions is systematic and potentially generalizable to similar problems involving intersections of one-dimensional systems.

  18. Finite-temperature properties of nonmagnetic transition metals: Comparison of the performance of constraint-based semilocal and nonlocal functionals

    NASA Astrophysics Data System (ADS)

    Gharaee, Leili; Erhart, Paul; Hyldgaard, Per

    2017-02-01

    We assess the performance of nonempirical, truly nonlocal, and semilocal functionals with regard to structural and thermal properties of 3 d ,4 d , and 5 d nonmagnetic transition metals. We focus on constraint- based functionals and consider the consistent-exchange van der Waals density-functional version vdW-DF-cx [Phys. Rev. B 89, 035412 (2014), 10.1103/PhysRevB.89.035412], the semilocal PBE functional [Phys. Rev. Lett. 77, 3865 (1996), 10.1103/PhysRevLett.77.3865], and the PBEsol functional [Phys. Rev. Lett. 100, 136406 (2008), 10.1103/PhysRevLett.100.136406], as well as the AM05 metafunctional [Phys. Rev. B 72, 085108 (2005), 10.1103/PhysRevB.72.085108]. Using the quasiharmonic approximation, the structural parameters, elastic response, and thermal expansion at finite temperatures are computed and compared to experimental data. We also compute cohesive energies explicitly including zero-point vibrations. It is shown that overall vdW-DF-cx provides an accurate description of thermal properties and retains a level of transferability and accuracy that is comparable to or better than some of the best constraint-based semilocal functionals. Especially, with regard to the cohesive energies, the consistent inclusion of spin-polarization effects in the atoms turns out to be crucial, and it is important to use the rigorous spin-vdW-DF-cx formulation [Phys. Rev. Lett. 115, 136402 (2015), 10.1103/PhysRevLett.115.136402]. This demonstrates that vdW-DF-cx has general-purpose character and can be used to study systems that have both sparse and dense electron distributions.

  19. Aharonov-Casher and Scalar Aharonov-Bohm Topological Effects

    NASA Astrophysics Data System (ADS)

    Dulat, Sayipjamal; Ma, Kai

    2012-02-01

    We reexamine the topological and nonlocal natures of the Aharonov-Casher and scalar Aharonov-Bohm phase effects. The underlying U(1) gauge structure is exhibited explicitly. And the conditions for developing topological Aharonov-Casher and scalar Aharonov-Bohm phases are clarified. We analyze the arguments of M. Peshkin and H. J. Lipkin [Phys. Rev. Lett. 74, 2847 (1995)PRLTAO0031-900710.1103/PhysRevLett.74.2847] in detail and show that they are based on the wrong Hamiltonian which yields their conclusion incorrect.

  20. Comment on "Aharonov-Casher and Scalar Aharonov-Bohm Topological Effects"

    NASA Astrophysics Data System (ADS)

    Choi, Taeseung; Cho, Sam Young

    2014-04-01

    In this Comment we point out (i) that the Hamiltonian, Eq. (17) in the Letter(Phys. Rev. Lett. 108, 070405 (2012)), is not a relativistic Hamiltonian, (ii) then that the conditions in the Letter are irrelevant for a topological AC and SAB effects, and (iii) conclusively that the non-relativistic Hamiltonian employed by Peshkin and Lipkin (Phys. Rev. Lett. 74, 2847 (1995)) has the same $U(1)_{mm}$ gauge structure for a fixed spin and then is not wrong, but their incorrect interpretation of the spin autocorrelations led to the incorrect conclusion.

  1. High-Sensitivity Conjugated Polymer/Nanoparticle Nanocomposite for Infrared Sensor Applications III

    DTIC Science & Technology

    2010-08-25

    Experimental Materials: Lead(II) oxide (PbO, 99.99%) was obtained from Alfa Aesar. Selenium (Se, 99.9%), oleic acid (OA, tech. 90%), trioctylphosphine (TOP...Law, O. E. Semonin, R. J. Ellingson, A. J. Nozik, Nano Lett. 2009, 9, 836–845. [15] V. Sukhovatkin, S. Hinds, L. Brzozowski, E. H. Sargent, Science...Norris, C. D. Frisbie, Nano Lett. 2009, 9, 3848–3852. [21] J. M. Luther, M. Law, Q. Song, C. L. Perkins, M. C. Beard, A. J. Nozik, ACS Nano 2008, 2

  2. Measuring evolution of a photon in an interferometer with spectrally resolved modes

    NASA Astrophysics Data System (ADS)

    Bula, Marek; Bartkiewicz, Karol; Černoch, Antonín; Javůrek, Dalibor; Lemr, Karel; Michálek, Václav; Soubusta, Jan

    2016-11-01

    In the year 2013, Danan et al. published a paper [Phys. Rev. Lett. 111, 240402 (2013), 10.1103/PhysRevLett.111.240402] demonstrating a counterintuitive behavior of photons in nested Mach-Zehnder interferometers. The authors then proposed an explanation based on the two-state vector formalism. This experiment and the authors' explanation raised a vivid debate within the scientific community. In this paper, we contribute to the ongoing debate by presenting an alternative experimental implementation of the Danan et al. scheme. We show that no counterintuitive behavior is observed when performing direct spectrally resolved detection.

  3. Atomic Layer Epitaxy of III-V Compound Semiconductors by Thermal and Laser-Assisted Metalorganic Chemical Vapor Deposition

    DTIC Science & Technology

    1989-01-31

    M. Bedair, Appi. Phys. Lett. 49, 1199 (1986). 18 N. Kabayashi, T. Makimoto , and Y. Horikoshi, Jap. J. Appi. Phys. 24, L962 (1985). 19 M, Yoshida. H...Kobayashi, T. Makimoto , and Y. Horikoshi, Appl. Phys. Lett, 50, 1435 (1987). 25 R. Bhat, J. R. Hayes, E. Colas, and R. Esagui, IEEE Electron Device...445-500’C), where the QWs were grown by the pulsed gas injection method. 137 Al0.5 Go 0 .5 As 960 ~ /V/ 480A / //,////504 90 A Substrat Figure 5.3 5

  4. Difference Between Far-Infrared Photoconductivity Spectroscopy and Absorption Spectroscopy: Theoretical Evidence of the Electron Reservoir Mechanism

    NASA Astrophysics Data System (ADS)

    Toyoda, Tadashi; Fujita, Maho; Uchida, Tomohisa; Hiraiwa, Nobuyoshi; Fukuda, Taturo; Koizumi, Hideki; Zhang, Chao

    2013-08-01

    The intriguing difference between far-infrared photoconductivity spectroscopy and absorption spectroscopy in the measurement of the magnetoplasmon frequency in GaAs quantum wells reported by Holland et al. [Phys. Rev. Lett. 93, 186804 (2004)] remains unexplained to date. This Letter provides a consistent mechanism to solve this puzzle. The mechanism is based on the electron reservoir model for the integer quantum Hall effect in graphene [Phys. Lett. A 376, 616 (2012)]. We predict sharp kinks to appear in the magnetic induction dependence of the magnetoplasmon frequency at very low temperatures such as 14 mK in the same GaAs quantum well sample used by Holland et al..

  5. Intelligent Processing of Ferroelectric Thin Films

    DTIC Science & Technology

    1994-05-31

    Review," Ferroelectrics, 75, 25(1987) be determined by the compensator. With the PLZT phase modulator, the above (3] H. Higashino , T. Kawaguchi, H...Phys. Lett. 42(1983)867 4. F. Wang and G. Haertling, Appl. Phys. Lett. 63(1993)1730 5. H. Higashino et al, Japan. J. Appi. Phys. Vol. 24(1985...Single Crystals," Phza.JRev. 97, 414(1991) 1585(1965) (2] D. Bonsurant and F. Gnadinger, "Ferroelectrics for [10] H. Higashino , T. Kawaguchi, H. Adachi, T

  6. Measurement of the refractive index of highly turbid media: reply to comment.

    PubMed

    Calhoun, W; Maeta, H; Combs, A; Bali, L M; Bali, S

    2011-08-15

    Peiponen et al. [Opt. Lett.35, 4108 (2010)] have expressed concern that a theoretical model we proposed in Calhoun et al. [Opt. Lett.35, 1224 (2010)] for total internal reflection from a turbid medium may be inconsistent with the experimental data, in the sense that the model fails to take into account unexplained oscillations in our data. We show that their concern arises from misinterpretation of our data and theory, and is, therefore, unfounded. NOTE: Optics Letters apologizes to the authors for the delay in the publication of this Reply.

  7. Search for supernova-produced 60Fe in a marine sediment.

    PubMed

    Fitoussi, C; Raisbeck, G M; Knie, K; Korschinek, G; Faestermann, T; Goriely, S; Lunney, D; Poutivtsev, M; Rugel, G; Waelbroeck, C; Wallner, A

    2008-09-19

    An 60Fe peak in a deep-sea FeMn crust has been interpreted as due to the signature left by the ejecta of a supernova explosion close to the solar system 2.8+/-0.4 Myr ago [Knie, Phys. Rev. Lett. 93, 171103 (2004)10.1103/PhysRevLett.93.171103]. In an attempt to confirm this interpretation with better time resolution and obtain a more direct flux estimate, we measured 60Fe concentrations along a dated marine sediment. We find no 60Fe peak at the expected level from 1.7 to 3.2 Myr ago. Possible causes for the discrepancy are discussed.

  8. Advances in time-dependent current-density functional theory

    NASA Astrophysics Data System (ADS)

    Berger, Arjan

    In this work we solve the problem of the gauge dependence of molecular magnetic properties (magnetizabilities, circular dichroism) using time-dependent current-density functional theory [1]. We also present a new functional that accurately describes the optical absorption spectra of insulators, semiconductors and metals [2] N. Raimbault, P.L. de Boeij, P. Romaniello, and J.A. Berger Phys. Rev. Lett. 114, 066404 (2015) J.A. Berger, Phys. Rev. Lett. 115, 137402 (2015) This study has been partially supported through the Grant NEXT No. ANR-10-LABX-0037 in the framework of the Programme des Investissements d'Avenir.

  9. Digital Optical Circuit Technology.

    DTIC Science & Technology

    1985-03-01

    under financial support of the Max-Planck- Gesell - schaft (MPG) and the Deutsche Forschungsgemeinschaft (DFG) and in part at the Tech- nische...mode picosecond pulses by injection locking of an AIGaAs semiconductor laser", Appl. Phys. Lett., vol. 41, 1982, pp. 14 - 16 0 G. Arnold , P. Russer, K...stripe laser", Appl. Phys. Lett., 39, pp. 27-29 (1981). 12. Peterman, K. and Arnold , G., "Noise and distortion charaL -ristics of semi- conductor lases

  10. Role of syndrome information on a one-way quantum repeater using teleportation-based error correction

    NASA Astrophysics Data System (ADS)

    Namiki, Ryo; Jiang, Liang; Kim, Jungsang; Lütkenhaus, Norbert

    2016-11-01

    We investigate a quantum repeater scheme for quantum key distribution based on the work by S. Muralidharan et al. [Phys. Rev. Lett. 112, 250501 (2014)], 10.1103/PhysRevLett.112.250501. Our scheme extends that work by making use of error syndrome measurement outcomes available at the repeater stations. We show how to calculate the secret key rates for the case of optimizing the syndrome information, while the known key rate is based on a scenario of coarse graining the syndrome information. We show that these key rates can surpass the Pirandola-Laurenza-Ottaviani-Banchi bound on secret key rates of direct transmission over lossy bosonic channels.

  11. Investigation of Crystalline Iron-Platinum Nickel and Amorphous Rare Earth-Iron Alloys for Permanent Magnets.

    DTIC Science & Technology

    2014-09-26

    AppI . Phys. 52, 2549 (1981). 3. S. G. Cornelison, D. J. Sellmyer and G. Hadjipanayis, J. Appl. Phys. 52, 1823 (1981). li * . 4. G. Hadjipanayis, M. Sc...23, 3349 (1981). 9. A. E. Clark, AppI . Phys. Lett. 23, 642 (1973). 10. H. T. Savage, A. E. Clark, S. J. Pickart, J. J. Rhyne and H. A. Alperin, IEEE...Trans. Magn. MAG-lO, 807 (1974). S 11. J.J. Croat, IEEE Trans. Magn. MAG-18, 1442 (1982). 12. N. C. Koon and B. N. Das, Appi . Phys. Lett. 39, 840 (1981

  12. Strictly nonclassical behavior of a mesoscopic system

    NASA Astrophysics Data System (ADS)

    Hu, Jiazhong; Vendeiro, Zachary; Chen, Wenlan; Zhang, Hao; McConnell, Robert; Sørensen, Anders S.; Vuletić, Vladan

    2017-03-01

    We experimentally demonstrate the strictly nonclassical behavior in a many-atom system using a recently derived criterion [E. Kot et al., Phys. Rev. Lett. 108, 233601 (2012), 10.1103/PhysRevLett.108.233601] that explicitly does not make use of quantum mechanics. We thereby show that the magnetic-moment distribution measured by McConnell et al. [Nature (London) 519, 439 (2015), 10.1038/nature14293] in a system with a total mass of 2.6 ×105 atomic mass units is inconsistent with classical physics. Notably, the strictly nonclassical behavior affects an area in phase space 103 times larger than the Planck quantum ℏ .

  13. Applying the relativistic quantization condition to a three-particle bound state in a periodic box

    NASA Astrophysics Data System (ADS)

    Hansen, Maxwell T.; Sharpe, Stephen R.

    2017-02-01

    Using our recently developed relativistic three-particle quantization condition [Phys. Rev. D 90, 116003 (2014), 10.1103/PhysRevD.90.116003; Phys. Rev. D 92, 114509 (2015), 10.1103/PhysRevD.92.114509], we study the finite-volume energy shift of a spin-zero three-particle bound state. We reproduce the result obtained using nonrelativistic quantum mechanics by Meißner et al. in [Phys. Rev. Lett. 114, 091602 (2015), 10.1103/PhysRevLett.114.091602] and generalize the result to a moving frame.

  14. Observation of Defect-Free Surface Modes in Optical Waveguide Arrays

    NASA Astrophysics Data System (ADS)

    Szameit, Alexander; Garanovich, Ivan L.; Heinrich, Matthias; Sukhorukov, Andrey A.; Dreisow, Felix; Pertsch, Thomas; Nolte, Stefan; Tünnermann, Andreas; Kivshar, Yuri S.

    2008-11-01

    We report on the experimental observation of novel defect-free surface modes predicted theoretically for modulated photonic lattices [I. L. Garanovich et al., Phys. Rev. Lett. 100, 203904 (2008)PRLTAO0031-900710.1103/PhysRevLett.100.203904]. We generate the linear surface modes in truncated arrays of periodically curved optical waveguides created in fused silica by a laser direct-writing technique. Our results demonstrate that the degree of surface wave localization can be controlled by selecting the waveguide bending amplitude.

  15. Working Beyond Moore’s Limit - Coherent Nonlinear Optical Control of Individual and Coupled Single Electron Doped Quantum Dots

    DTIC Science & Technology

    2015-07-06

    10.1103/PhysRevLett.104.167401. http://link.aps.org/doi/10.1103/PhysRevLett.104.167401 3. Erik D. Kim, Katherine Truex, Yanwen Wu, A. Amo ...in an InAs quantum dot. Conference on Advances in Photonics of Quantum Computing, Memory, and Communication III, JAN 27- 28, 2010 San Francisco, CA ...Entanglement between a Quantum Dot Spin and a Photon” CLEO/QELS, San Jose, CA (2013). 14. John Schaibley, Alex Burgers, Gregory McCracken, Luming Duan

  16. Anti-Stokes Luminescence Cooling of Tm3+Doped BaY2F8

    DTIC Science & Technology

    2008-02-04

    edited by Richard I . Epstein, Mansoor Sheik- Bahae , Proc. SPIE 6461 (Bellingham, Washington, 2007). 2. R.I. Epstein, M.I. Buchwald, B.C. Edwards, T.R...Greenfield, R.I. Epstein, ”Cooling to 208 K by optical refrigeration,” Appl. Phys. Lett. 86, 154107 (2005). 4. M. Sheik- Bahae , R. Epstein, ”Can laser...light cool semiconductors?,” Phys. Rev. Lett. 92, 247403 (2004). 5. C.W. Hoyt, M. Sheik- Bahae , R.I. Epstein, B.C. Edwards, J.E. Anderson, ”Observation of

  17. Rotational Spectroscopy Unveils Eleven Conformers of Adrenaline

    NASA Astrophysics Data System (ADS)

    Cabezas, C.; Cortijo, V.; Mata, S.; Lopez, J. C.; Alonso, J. L.

    2013-06-01

    Recent improvements in our LA-MB-FTMW instrumentation have allowed the characterization of eleven and eight conformers for the neurotransmitters adrenaline and noradrenaline respectively. The observation of this rich conformational behavior is in accordance with the recent observation of seven conformers for dopamine and in sharp contrast with the conformational reduction proposed for catecholamines. C. Cabezas, I. Peña, J. C. López, J. L. Alonso J. Phys. Chem. Lett. 2013, 4, 486. H. Mitsuda, M. Miyazaki, I. B. Nielsen, P. Carcabal,C. Dedonder, C. Jouvet, S. Ishiuchi, M. Fujii J. Phys. Chem. Lett. 2010, 1, 1130.

  18. Applications of Scanning Tunneling Microscopy to Electrochemistry

    DTIC Science & Technology

    1988-10-28

    Stroscio, J.A.; Feenstra, ii.4.; Fain, A.P. Phys. Rev. Lett. 1987 U8, 1668-71. 17. Hamers, R.J.; Tromp, .M.; Demuth , J.E. Phys. &ev.Lett. 1986, 56, 1972-75...Feenstra, R.M.; Stroscio, J.A.; Fein, A.P. fLkL 1987, 181. 295-306. 49. Demuth , J.; Avouris, P. Phys. Today 1983, November, p 62. 50. Reihl, B.; Giazewski...F.C. In Electroanalytical Chemistry; Bard, A.J., Ed.; Marcel Dekker: Noy York, 1970; vol. 4, p 129. 64. Davis, J.M.; Fan, F-R.F.; Bard, A.J. J

  19. Fractal and Spherulitic Morphology of Silicon Nitride Crystallized from Amorphous Films

    DTIC Science & Technology

    1988-01-01

    Dougherty, P.D. Kaplan, and J.P. Gollub, Phys. Rev. Lett. 58, 1652 (1987). 3. F. J. Padden, Jr., and H . D. Keith, J. Appl. Phys. 30, 1479 (1959). 4...S.W. Freiman, G.Y. Onoda Jr., A.G. Pincus in Advances in Nucleation and Crystallization in Glasses, ed. L.L. Hench and S.W.Freiman (The American Ceramic...Phys. Rev. Lett. 59, 2315 (1987). 17. C.A. Carosella et al., unpublished. 18. J. Belz, E.H. Te Kaat, G. Zimmer, and H . Vogt, Nucl. Instr. and Meth. B19

  20. Exact coupling threshold for structural transition reveals diversified behaviors in interconnected networks

    NASA Astrophysics Data System (ADS)

    Darabi Sahneh, Faryad; Scoglio, Caterina; Van Mieghem, Piet

    2015-10-01

    An interconnected network features a structural transition between two regimes [F. Radicchi and A. Arenas, Nat. Phys. 9, 717 (2013), 10.1038/nphys2761]: one where the network components are structurally distinguishable and one where the interconnected network functions as a whole. Our exact solution for the coupling threshold uncovers network topologies with unexpected behaviors. Specifically, we show conditions that superdiffusion, introduced by Gómez et al. [Phys. Rev. Lett. 110, 028701 (2013), 10.1103/PhysRevLett.110.028701], can occur despite the network components functioning distinctly. Moreover, we find that components of certain interconnected network topologies are indistinguishable despite very weak coupling between them.

  1. Measuring and manipulating the temperature of cold molecules trapped on a chip

    NASA Astrophysics Data System (ADS)

    Marx, S.; Adu Smith, D.; Insero, G.; Meek, S. A.; Sartakov, B. G.; Meijer, G.; Santambrogio, G.

    2015-12-01

    Following Marx et al. [Phys. Rev. Lett. 111, 243007 (2013), 10.1103/PhysRevLett.111.243007], we discuss the measurement and manipulation of the temperature of cold CO molecules in a microchip environment. In particular, we present a model to explain the observed and calculated velocity distributions. We also show that a translational temperature can be extracted directly from the measurements. Finally, we discuss the conditions needed for an effective adiabatic cooling of the molecular ensemble trapped on the microchip.

  2. Proceedings of the International Workshop on Dynamics and Aeroelastic Modeling of Rotorcraft (7th) held in St. Louis, Missouri on 14-16 October, 1997

    DTIC Science & Technology

    1997-10-14

    Lett., 64(11):1196-1199,1990.- [4] E.R Hunt. Stabilizing high-period periodic orbits in a chaotic system: the diode resonator. Phys. Rev. Lett., 67...orthogonal to the ’ lTp , so that Wi M’lTp = 0 can be expressed in the following form: (E - wp2M) Wp = (’lT~EI + ifJ~Dll - cl>pApM) 1/Jp (11) here... Laser Doppler Velocimetry," Journal of the American Helicopter Society, Vol. 41, No.4, Oc- tober 1996, pp. 342-353. 42Coyne, A. J., Bhagwat, M. J

  3. P-Doping of (CH)x to the Metallic Regime with Gaseous Oxygen. Application to Oxygen Fuel Cell Type Electrodes.

    DTIC Science & Technology

    1984-05-01

    References 1. J. M. Pochan , H. W. Gibson and F. C. Bailey, J. Polym. Sci., Polym. Lett. Ed., 1980, 18, 447; J. C. Chien, J. Polym. Sci., Py Lett. Ed., 191...19, 249; J. M. Pochan , D. F. Pochan , M. Rommelmann and H. W. Gibson, Macro- molecules, 1981, 14, 110; J. M. Pochan , H. W. Gibson and J. Harbour...Polymer, 1982, 23, 439; H.-W. Gibson and J. M. Pochan , Macromolecules, 1982, 15. 242. 2. A. G. MacDiarmid, Y. W. Park, A. J. Heeger and M. A. Druy, J. Chem

  4. Experimental investigation of ≈130 keV kinetic energy antiprotons annihilation on nuclei

    NASA Astrophysics Data System (ADS)

    Aghai-Khozani, H.; Barna, D.; Corradini, M.; Hayano, R.; Hori, M.; Kobayashi, T.; Leali, M.; Lodi-Rizzini, E.; Mascagna, V.; Prest, M.; Soter, A.; Todoroki, K.; Vallazza, E.; Venturelli, L.; Zurlo, N.

    2014-04-01

    The study of the antiproton ( bar {p}) annihilation cross section on nuclei at low energies (eV-MeV region) has implications for fundamental cosmology as well as for nuclear physics. Concerning the former, different models try to explain the matter/antimatter asymmetry in the universe assuming the existence of the so-called "islands" where antinucleon-nucleon annihilations occur in the border region (Cohen et al. Astrophys. J. 495, 539-549, 1998), while, from the nuclear physics point of view, the annihilation process is a valuable tool to evaluate the neutron/proton ratio in order to probe the external region of the nucleus (Gupta et al. Nucl. Phys. B 70(3), 414-424, 1974). The existing data of antinucleon-nucleon (or -nucleus) annihilation cross-sections are mainly confined to energies above ≈1 MeV, while the cross section measured at LEAR in the 80's-90's (mostly with light targets Agnello et al. Phys. Lett. B 256, 349-353, 1991; Bertin et al. Phys. Lett. B 369, 77-85, 1996; Bertin et al. Phys. Lett. B 414, 220-228, 1997; Zenoni et al. Phys. Lett. B 461, 405-412, 1999; Bianconi et al. Phys. Lett. B 481, 194-198, 2000; Bianconi et al. Phys. Lett. B 492, 254-258, 2000) showed an unexpected behaviour for energies below 1 MeV (Bianconi et al. Phys. Lett. B 483, 353-359, 2000; Bianconi et al. Phys. Rev. C 62, 014611-7, 2000; Batty et al. Nucl. Phys. A 689, 721-740, 2001). The results showed a saturation with the atomic mass number against the A 2/3 trend which is observed for higher energies (being A the target mass number). The ASACUSA collaboration at CERN recently measured antiproton annihilation cross section on different kinds of nuclei with a bar {p} kinetic energy of 5.3 MeV (Bianconi et al. Phys. Lett. B 704, 461-466, 2011; Corradini et al. Nucl. Instr. Methods A 711, 12-20, 2013). Such results proved compatibility with the black-disk model with the Coulomb correction. But till now experimental difficulties prevented the investigation at energies below ≈1

  5. Attosecond time delay in valence photoionization and photorecombination of argon: A time-dependent local-density-approximation study

    NASA Astrophysics Data System (ADS)

    Magrakvelidze, Maia; Madjet, Mohamed El-Amine; Dixit, Gopal; Ivanov, Misha; Chakraborty, Himadri S.

    2015-06-01

    We determine and analyze the quantum phases and time delays in photoionization and photorecombination of valence 3 p and 3 s electrons of argon using the Kohn-Sham local-density-functional approach. The time-dependent local-density approximation is used to account for the electron correlation. Resulting attosecond Wigner-Smith time delays show very good agreement with the recent experiment on argon that measured the delay in 3 p photorecombination [S. B. Schoun et al., Phys. Rev. Lett. 112, 153002 (2014), 10.1103/PhysRevLett.112.153002].

  6. Neutrons with <σz> > 100 and ``polarization amplification''

    NASA Astrophysics Data System (ADS)

    Golub, R.; Gähler, R.

    1989-11-01

    We present a description of the Aharonov, Albert and Vaidman (AAV) anomaly [Y. Aharonov et al., Phys. Rev. Lett. 60 (1988) 1351, Phys. Lett. A124 (1987) 199], wherein spin {1}/{2} particles can have apparent values of < σz> ≫ 1, in terms of a normal behaviour with < σz> = 1 followed by an amplification of the resulting precession angles by a "polarization amplifier" as proposed by Mezei [F. Mezei, Comm. Phys. 1 (1976) 81; J. Phys. Coll. C3, suppl. au no. 3, 45 (1984) C3-223].

  7. Ultrasensitive phase estimation with white light

    NASA Astrophysics Data System (ADS)

    Li, Chuan-Feng; Xu, Xiao-Ye; Tang, Jian-Shun; Xu, Jin-Shi; Guo, Guang-Can

    2011-04-01

    An improvement of the scheme by Brunner and Simon [Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.105.010405 105, 010405 (2010)] is proposed in order to show that quantum weak measurements can provide a method to detect ultrasmall longitudinal phase shifts, even with white light. By performing an analysis in the frequency domain, we find that the amplification effect will work as long as the spectrum is large enough, irrespective of the behavior in the time domain. As such, the previous scheme can be notably simplified for experimental implementations.

  8. Measurement of the ion drag force on free falling microspheres in a plasma

    NASA Astrophysics Data System (ADS)

    Hirt, Markus; Block, Dietmar; Piel, Alexander

    2004-12-01

    Experiments on the quantitative determination of the ion drag force on free-falling dust particles in a collisionless regime are presented. The ion drag forces are measured for ion energies up to 40 eV and the obtained results are compared in detail with theories. Good agreement is found with the Barnes model [Barnes et al., Phys. Rev. Lett. 68, 313 (1992)] of the ion drag force for high ion energies (E>3 eV). At lower ion energies the model of Khrapak [Khrapak et al., Phys. Rev. Lett. 90, 225002 (2003)] is found to give a better description of the capture of slowly streaming ions by highly charged particles.

  9. Insight into the Nonlinear Absorbance of Two Related Series of Two-Photon Absorbing Chromophores (Postprint)

    DTIC Science & Technology

    2007-01-01

    Reinhardt, B. A. Opt. Lett. 1995, 20, 1524. (f) Larson, E . J.; Friesen , L. A.; Johnson, C. K. Chem. Phys. Lett. 1997, 265, 161. (g) Albota, M.; Beljonne, D...62102F 5d. PROJECT NUMBER 4348 5e. TASK NUMBER RG 6. AUTHOR(S) Joy E . Rogers (UES, Inc.) Jonathan E . Slagle (AT&T Government Solutions) Daniel G...Insight into the Nonlinear Absorbance of Two Related Series of Two-Photon Absorbing Chromophores Joy E . Rogers,*,†,‡ Jonathan E . Slagle,†,§ Daniel G

  10. Proceedings of the International Symposium on Shock Tubes and Waves (12th) Held at Jerusalem on 16-19 July 1979.

    DTIC Science & Technology

    1980-02-01

    a laser transmission link from space to ground. An overall study of the Space Laser Power System has been performed by Jones et al. 35 who have...and R.L. Morse, Phys. Rev. Lett. 34, 721 (1975). 52. M.S. White , J.D. Kilkenny and A.E. Dangor, Phys. Rev. Lett. 35, 524 (1975) 53. A. Zigler, H. Zmora...examined using the scalar formulation of Huygens’ principle (Kirchoff integral), with the shock density pro- file introduced as a transmission coefficient

  11. IMACS 󈨟: Proceedings of the IMACS World Congress on Computation and Applied Mathematics (13th) Held in Dublin, Ireland on July 22-26, 1991. Volume 2. Computational Fluid Dynamics and Wave Propagation, Parallel Computing, Concurrent and Supercomputing, Computational Physics/Computational Chemistry and Evolutionary Systems

    DTIC Science & Technology

    1991-01-01

    Rev . Lett.,.Y9. 132 (1982).ES IV is found almost at a point value of F . As F 8 . Chirikov.B.V., Phys . Rept., 52. 265 (1979). increases toward Fw...P., and JerOme, B. (1989). Phys . Rev . A S, . ,..40, 317. 6. Pieranski, P., JerOme, B., and Gabay, M. (1990). Mol. Cryst. -Lia. Cryst. 179, 285. f ... Phys . Lett. 141A, 412 (1989) 7. F . J. Romelras and E. Ott, Phys . Roy. 35A, 4404 (1987) 8 . T. Kapltaniak et al., J. Phys A, 23, (19qO) 9. H.S.

  12. Ultra-Fast Image Sensor Using Ge on Insulator MIS/Schottky Detectors

    DTIC Science & Technology

    2008-05-28

    Appl . Phys. Lett., vol. 80, no. 5, pp. 793-795, Feb. 2002. [5] S. M. Sze, Physics of Semiconductor Devices (2nd Edition). Taipei, Taiwan, R.O.C., 1985...type Si and Ge,” Appl . Phys. Lett., vol. 88, no. 14, p. 143509, Apr. 2006. [12] M. Heyns, M. Meuris, and M. Caymax, “Ge and III/V as enabling...Lin, C.-Y. Yu, C.-Y. Peng, W. S. Ho, and C. W. Liu, “Broadband SiGe/Si quantum dot infrared photodetectors,” J. Appl . Phys., Vol. 101, 033117, 2007

  13. Effects of thin film and Stokes drift on the generation of vorticity by surface waves

    NASA Astrophysics Data System (ADS)

    Parfenyev, V. M.; Vergeles, S. S.; Lebedev, V. V.

    2016-11-01

    Recently a theoretical scheme explaining the vorticity generation by surface waves in liquids was developed [Phys. Rev. Lett. 116, 054501 (2016), 10.1103/PhysRevLett.116.054501]. Here we study how a thin (monomolecular) film presented on the surface of liquid affects the generated vorticity. We demonstrate that the vorticity becomes parametrically larger than for the case of liquid with a free surface, and the parameter is the quality factor of surface waves up to numerical factor. We also discuss the PIV experimental scheme intended to observe the generated vorticity and find that Stokes drift influences the measured velocity field. Explicit expression for the vertical vorticity was obtained.

  14. Raman-Controlled Quantum Dots for Quantum Computing

    DTIC Science & Technology

    2005-11-30

    Phys. Rev. Lett. 80, 2245 s1998d. 17 M . B . Plenio , S. F. Huelga, A. Beige, and P. L. Knight, Phys. Rev. A 59, 2468 s1999d. 18 X.-L. Feng, Z.- M . Zhang, X...Gupta et al., Phys. Rev. B 59, R10421 (1999). [19] J. Javanainen, Europhys. Lett. 17, 407 (1992); G. C. Hegerfeldt and M . B . Plenio , Phys. Rev. A 46...atoms are Ge,1 m eV and a,1 meV, which means that SGC will not be observed in such a system. B . Entanglement and SGC of atomic hyperfine states In

  15. Reformulating noncontextuality inequalities in an operational approach

    NASA Astrophysics Data System (ADS)

    Xu, Zhen-Peng; Saha, Debashis; Su, Hong-Yi; Pawłowski, Marcin; Chen, Jing-Ling

    2016-12-01

    A new theory-independent noncontextuality inequality is presented [R. Kunjwal and R. W. Spekkens, Phys. Rev. Lett. 115, 110403 (2015), 10.1103/PhysRevLett.115.110403] based on a Kochen-Specker (KS) set without imposing the assumption of determinism. By proposing noncontextuality inequalities, we show that such result can be generalized from a KS set to the noncontextuality inequalities not only for a state-independent scenario but also for a state-dependent scenario. The YO-13 ray and n cycle ray are considered as examples.

  16. Sub- and Superluminal Propagation of Intense Pulses in Media with Saturated and Reverse Absorption

    NASA Astrophysics Data System (ADS)

    Agarwal, G. S.; Dey, Tarak Nath

    2004-05-01

    We develop models for the propagation of intense pulses in solid state media which can have either saturated absorption or reverse absorption. We model subluminal propagation in ruby and superluminal propagation in alexandrite as three and four level systems, respectively, coupled to Maxwell's equations. We present results well beyond the traditional pump-probe approach and explain the experiments of Bigelow et al. [

    Phys. Rev. Lett.PRLTAO0031-9007 90, 113903 (2003); 10.1103/PhysRevLett.90.113903
    ScienceSCIEAS0036-8075 301, 200 (2003)
    ] on solid state materials.

  17. Study of Large-Scale Wave Structure and Development of Equatorial Plasma Bubbles Using the C/NOFS Satellite

    DTIC Science & Technology

    2012-10-31

    include Kwajalein and Guam. The scientific value of the Pacific cluster is enhanced by ionograms being collected with three ionosondes (Kwajalein, Pohnpei...R.T., Multi-reflected echoes: Another ionogram signature of large-scale wave structure, Geophys. Res. Lett., 36, L01102, doi:10.1029/2008GL036221...Geophys. Res. Lett., 38, L20102, doi:10.1029/2011GL049173, 2011. Thampi, S.V., R. Tsunoda, L. Jose, and T.K. Pant, Ionogram signatures of large-scale

  18. First-principles theory of quantum well resonance in double barrier magnetic tunnel junctions.

    PubMed

    Wang, Yan; Lu, Zhong-Yi; Zhang, X-G; Han, X F

    2006-08-25

    Quantum well (QW) resonances in Fe(001)/MgO/Fe/MgO/Fe double barrier magnetic tunnel junctions are calculated from first principles. By including the Coulomb blockade energy due to the finite size islands of the middle Fe film, we confirm that the oscillatory differential resistance observed in a recent experiment [T. Nozaki, Phys. Rev. Lett. 96, 027208 (2006)10.1103/PhysRevLett.96.027208] originates from the QW resonances from the Delta1 band of the Fe majority-spin channel. The primary source of smearing at low temperatures is shown to be the variation of the Coulomb blockade energy.

  19. Tunable Molecular Lasers.

    DTIC Science & Technology

    1986-09-01

    Lett. 2, 64-66 (1978). 13. R. Burnham, "Discharge pumped mercuric halide dissociation lasers," Appl. Phys. Lett. 33, 156-159 (1978). 14. W. L. Nighan...University of Illinois. The goal of this research program was two-fold: 1) to develop new sources of tunable coherent radiation in the visible and...efficiency for converting XeF radiation (X - 351 nm) into blue-green output is 23% which corresponds to a photon conversion efficiency of approximately 1/3

  20. Attractive forces between ions in quantum plasmas: Failure of linearized quantum hydrodynamics

    NASA Astrophysics Data System (ADS)

    Bonitz, M.; Pehlke, E.; Schoof, T.

    2013-03-01

    In a recent Letter [P. K. Shukla and B. Eliasson, Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.108.165007 108, 165007 (2012)] the discovery of a new attractive force between protons in a hydrogen plasma was reported that would be responsible for the formation of molecules and of a proton lattice. Here we show, based on ab initio density functional calculations and general considerations, that these predictions are not correct and caused by using linearized quantum hydrodynamics beyond the limits of its applicability.

  1. Thermostat with a local heat-bath coupling for exact energy conservation in dissipative particle dynamics.

    PubMed

    Pastewka, Lars; Kauzlarić, David; Greiner, Andreas; Korvink, Jan G

    2006-03-01

    We present a Markov process which models particle hydrodynamics with conservation of the first three momenta. This is achieved by extending the [Peters, Europhys. Lett. 66, 311 (2004)] and [Lowe, Europhys. Lett. 47, 145 (1999)] method to incorporate energy conservation. The equivalence of the energy conserving Peters method and dissipative particle dynamics with energy conservation (DPDE) in the limit of a vanishing time step is shown. Simple numerical experiments clearly demonstrate the applicability of the methods. This overcomes current limitations of DPDE in the study of complex fluids in the (N,V,E) ensemble.

  2. Magneto-elastic Tuning of Ferroelectricity Within a Magnetoelectric Nanowire

    DTIC Science & Technology

    2011-01-01

    Wang, S. E. Lofland, Z. Ma, L. Mohaddes-Ardabili, T . Zhao, L. Salamanca-Riba, S. R. Shinde , S. B. Ogale, F. Bai, D. Viehland, Y. Jia, D. G. Schlom, M...2008). 6S. S. Nonnenmann, E. M. Gallo, M. T . Coster, G. R. Soja, C. L. Johnson, R. S. Joseph, and J . E. Spanier, Appl. Phys. Lett. 95, 232903 (2009...7S. S. Nonnenmann, O. D. Leaffer, E. M. Gallo, M. T . Coster, and J . E. Spanier, Nano Lett. 10, 542 (2010). 8N. B. Chaure, P. Stamenov, F. M. F. Rhen

  3. Fractional Feynman-Kac equation for non-brownian functionals.

    PubMed

    Turgeman, Lior; Carmi, Shai; Barkai, Eli

    2009-11-06

    We derive backward and forward fractional Feynman-Kac equations for the distribution of functionals of the path of a particle undergoing anomalous diffusion. Fractional substantial derivatives introduced by Friedrich and co-workers [Phys. Rev. Lett. 96, 230601 (2006)10.1103/PhysRevLett.96.230601] provide the correct fractional framework for the problem. For applications, we calculate the distribution of occupation times in half space and show how the statistics of anomalous functionals is related to weak ergodicity breaking.

  4. Generality of Deterministic Chaos, Exponential Spectra, and Lorentzian Pulses in Magnetically Confined Plasmas

    NASA Astrophysics Data System (ADS)

    Maggs, J. E.; Morales, G. J.

    2011-10-01

    The dynamics of transport at the edge of magnetized plasmas is deterministic chaos. The connection is made by a previous survey [M. A. Pedrosa , Phys. Rev. Lett. 82, 3621 (1999)PRLTAO0031-900710.1103/PhysRevLett.82.3621] of measurements of fluctuations that is shown to exhibit power spectra with exponential frequency dependence over a broad range, which is the signature of deterministic chaos. The exponential character arises from Lorentzian pulses. The results suggest that the generalization to complex times used in studies of deterministic chaos is a representation of Lorentzian pulses emerging from the chaotic dynamics.

  5. Universal efficiency bounds of weak-dissipative thermodynamic cycles at the maximum power output

    NASA Astrophysics Data System (ADS)

    Guo, Juncheng; Wang, Junyi; Wang, Yuan; Chen, Jincan

    2013-01-01

    Based on the assumption of weak dissipation introduced by Esposito [Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.105.150603 105, 150603 (2010)], analytic expressions for the efficiency bounds of several classes of typical thermodynamic cycles at the maximum power output are derived. The results obtained are of universal significance. They can be used to conveniently reveal the general characteristics of not only Carnot heat engines, but also isothermal chemical engines, non-Carnot heat engines, flux flow engines, gravitational engines, quantum Carnot heat engines, and two-level quantum Carnot engines at the maximum power output and to directly draw many important conclusions in the literature.

  6. Development of a Discharge Pumped 13 nm Laser for Metrology of Projection Lithography Optics at the Manufacture-Site

    DTIC Science & Technology

    2006-05-31

    tute ~Nauka, Moscow, 1998!, Vol. 13 ~in Russian!. @18# L. M. Biberman, Sov . Phys . JETP 17 416 ~1947!; T. Holstein, Phys . Rev. 72, 1212 ~1947!; 83 1159...Tomasel, O.D. Cortazar, D. Hartshorn, J.L.A. Chilla,, Phys . Rev. Lett ., 73, 2192, 1994; J.J. Rocca, D.P.Clark, J.L.A. Chilla, and V.N. Shlyaptsev, Phys ...Rev. Lett . 77, 1476-1479, (1996). 2. F.G. Tomasel, J.J.Rocca, V.N. Shlyaptsev, and C.D. Macchietto, Phys . Rev. A 55, 1437-1440 (1997). 3. M. Frati

  7. Multiple Channel Laser Beam Combination and Phasing Using Stimulated Brillouin Scattering in Optical Fibers

    DTIC Science & Technology

    2005-12-01

    Mandel’shtam–Brillouin scattering,” JETP Lett ., 15, 109-112, 1972. 41 . Hellwarth, R. W., “Phase conjugation by stimulated backscattering,” ch. 7, Optical...wavefront-reversing mirrors,” Sov . Phys . JETP , 52, 847-851, 1980. 79. Valley, M., G. Lombardi, and R. Aprahamian, “Beam combination by stimulated...Thomas, and R. Byer, Monolithic, “Unidirectional single-mode Nd:YAG ring laser”, Opt. Lett ., 10, 65-67, 1985 . 56. Imai, M. and E. H. Hara

  8. High-Brightness Diode Lasers for Blue-Green Applications

    DTIC Science & Technology

    1989-01-01

    Lett . 10, 408-410 ( 1985 ). 7. B.Ya. Zel’dovich, V.I. Popovichev, V.V. Ragul’skii, and F.S. Faizullov, Soy. Phys .- JETP 15, 109 (1972...pumped photorefractive mirrors," Appl. Phys . Lett . 46, 909 ( 1985 ). 6. T.Y. Chang and R.W. Hellwarth, "Optical phase conjugation by backscattering in...intersecting light beam," Sov . Phys .- JETP 65, 443-449 I (1987). 19. A.V. Nowak, T.R. Moore, and R.A. Fisher, "Observations of internal beam production in

  9. Unstable Behavior of Lasers and Other Optical Systems.

    DTIC Science & Technology

    1987-11-27

    JETP Lett . 14, 390 (1971); (g) V.I. Bespalov and V.J. Talanov, Sov . Phys . JETP 33, 77 (1971); (h) K. Konno and H. Suzuki, Physica Scripta 20...1964); (b) V.V. Korobkin and A.V. Uspenskii, Sov . Phys . JETP 18, 693 (1964); (c) A.Z. Grazyuk and A.N. Oraevskii, in Quantum Electronics and Coherent...Quantum Electron. 11, 127 (1986). 6. (a) H. Haken, Phys . Lett . 53A, 77 ( 1985 ); (b) H. Risken and K. Nummedal, J. Appl. Phys . 5%- Ř.-,.-.; " -’%

  10. Advanced Concepts Theory Annual Report 1984.

    DTIC Science & Technology

    1985-06-26

    M. A. Levine, D. F. Price, R. E. Stewart, and B. K. F. Young, Appl. Phys . Lett . 42 , 946 (1983). 17. J. E. Bailey, Ph. D. dissertation, University of...Kuswa, A. V. Farnsworth Jr., J. P. Quintenz, R. J. Leeper, E. J. T. Burns, and S. Humphries Jr., Phys . Rev. Lett . 42 , 610 (1979). 4. E. J. T. Burns...Peleg and Z. Zinamon, Phys . Fluids 24,1527 (1981). 12. Yu. V. Afanas’ev, V. A. Isakov, and 0. N. Krokhin, Sov . Phys . JETP 54,910 (1981). 13. A. V. Dobkin

  11. Multiple Channel Laser Beam Combination and Phasing Using Stimulated Brillouin Scattering in Optical Fibers

    DTIC Science & Technology

    2005-12-22

    Mandel’shtam–Brillouin scattering,” JETP Lett ., 15, 109-112, 1972. 41 . Hellwarth, R. W., “Phase conjugation by stimulated backscattering,” ch. 7, Optical...wavefront-reversing mirrors,” Sov . Phys . JETP , 52, 847-851, 1980. 79. Valley, M., G. Lombardi, and R. Aprahamian, “Beam combination by stimulated...Thomas, and R. Byer, Monolithic, “Unidirectional single-mode Nd:YAG ring laser”, Opt. Lett ., 10, 65-67, 1985 . 56. Imai, M. and E. H. Hara

  12. SDIO/IST Ultrashort Wavelength Laser: Novel Experimental Schemes for Observing the Mossbauer Effect in Long-Lived Nuclear Levels.

    DTIC Science & Technology

    1987-07-01

    Sov . Phys . - JETP Lett . 39, 573 (1984). 32. G. V. Smirnov and A. I. Chumakov, Sov . Phys . JETP 62, 673 ( 1985 ). 33. G. V. Smirnov, Hyperfine...Perlow, and S. S. Hanna, Phys . Rev. Lett . 4, 181 (1960). 41 . F. J. Lynch, R. E. Holland, and M. Hamermesh, Phys . Rev. 120, 513 (1960). 42 . C. S. Wu, Y. K...Red. 9, 123 (1969). 8. E. P. Stepanov, A. N. Artem’ev, I. P. Perstnev, V. V. Sklyarevskii, and G. V. Smirnov, Sov . Phys

  13. Fracture and Yield Strengths of Composition B and TNT as a Function of Processing Conditions and Composition

    DTIC Science & Technology

    1991-12-01

    B. W., J. Mater. Sci. Lett. 8, 757 (1973). 25. Hagan, J. T and r’.h- ciii, M. M., J. Mater. Sci. Lett. 12, 1055 ( 1977 ). 26. Rice, R. W., "Treatise on...Material Science and Technology," Vol. 11, ed. Mac- Crone, R. K., Academic Press, New York, 1977 . 27. Costain, T. and Motto, R., Technical Report 4587...Alford, N. McN., Matl. Sci. and Engr. 56, 279 (1982). 32. Bentur, A. and Mindess , S., Cement and Concrete Res. 16, 59 (1986). 33. Zielinski, A. J. and

  14. A Direct Transfer of Layer-Area Graphene

    DTIC Science & Technology

    2010-01-01

    A direct transfer of layer-area graphene William Regan,1,2 Nasim Alem,1,2,3 Benjamín Alemán,1,2,3 Baisong Geng,1,4 Çağlar Girit,1,2 Lorenzo Maserati... Meyer , Ç. Ö. Girit, M. F. Crommie, and A. Zettl, Appl. Phys. Lett. 92, 123110 2008. 10J. C. Meyer , Ç. Ö. Girit, M. F. Crommie, and A. Zettl, Nature...London 454, 319 2008. 11M. D. Fischbein and M. Drndić, Appl. Phys. Lett. 93, 113107 2008. 12J. C. Meyer , A. K. Geim, M. I. Katsnelson, K. S

  15. Tight-Binding and Hueckel Models of Molecular Clusters

    DTIC Science & Technology

    1990-05-01

    Chem. Phys. Lett. 163, 323 (1989); Phys. Rev. Lett. 64, 551 (1990). 16. H. Kupka and K. Jug, Chem. Phys. 130, 23 (1989). 17. Y. Wang , T. F. George...D. M. Lindsay and A. C. Beri, J. Chem. Phys. 86, 3493 (1987). 18. D. M. Lindsay, Y. Wang and T. F. George, J. Chem. Phys. 86, 3500 (1987). 23 Table 1...Department of Chemistry Northwestern University University of California Evanston, IL 60208 Irvine, CA 92717 Professor Frank DiSalvo Professor Roald Hoffmann

  16. Optical (Hyper) Polarizabilities of Small Silicon Clusters

    DTIC Science & Technology

    1990-11-01

    and R. E. Sinal- ley, Chem. Phys. Lett. 138. 119 (19S7): A. Kasuva and Y. -Nishina. Z. Phys. D 12, 493 (1989). 5. Y. Wang , N. Herron. WV. Mahler and A...Rev. B 37, 6991 (1988); R. Biswas. C. Z. Wang , C. T. Chan, K. NI. Ho and C. NI. Souk- oulis. Phys. Rev. Lett. 63, 1491 (1989); A. D. Nlistriotis. N...Irvine, CA 92717 Professor Frank DiSalvo Professor Roald Hoffmann Department of Chemistry Department of Chemistry Cornell University Cornell University

  17. Experimental Signature of Programmable Quantum Annealing (Author’s Manuscript)

    DTIC Science & Technology

    2013-06-28

    approaching its Gibbs dis - tribution value. This would not be the case if ps were governed by the spectrum of HIsing. In Fig. 6 we com- pare a numerical...Science 292, 472 (2001). [12] S. Boixo and R. D. Somma , Phys. Rev. A 81, 032308 (2010), URL http://link.aps.org/doi/10.1103/PhysRevA.81.032308. [13] D...Rev. Lett. 99, 070502 (2007), URL http://link.aps.org/doi/10.1103/PhysRevLett.99.070502 . [15] R. D. Somma , S. Boixo, H. Barnum, and E. Knill, Phys

  18. Proceedings (1st) of the Topical Meeting on the Microphysics of Surfaces, Beams, and Adsorbates Held in Santa Fe, New Mexico on 4-6 February 1985.

    DTIC Science & Technology

    1985-12-18

    1974). Piercy (to be published). ’J. P . Cowin, D. J. Auerbach , C. Becker, and L. Wharton, Surf. Sci. 78,545 41M. Mashni and P . Hess, Chem. Phys. Lett...Dashed curves (a) and (b) have Poland. ,..-,:.* ’J. P . Cowin, D. J. Auerbach , C. Becker, and L. Wharton, Surf. Sci. 78, 545 .,"..,. .! the same meaning as...Chemi. Phys. 80. 3451 11984). ’A. W. Kleyn. A. C. Luntz. and D. J. Auerbach , Phys. Rev. Lett. 47, 1169 ŘJ. Misewich, C. N. Plum. G. Blyholder, P . L

  19. Infrared Spectroscopic Study of O2 Interaction with Carbon Nanotubes

    DTIC Science & Technology

    2005-12-01

    total >CdC< intensity was removed by the adsorption of H or D, beyond which little or no further change in the spectrum was observed. It was suggested...R. E. Chem. Phys. Lett. 2000, 324, 213. (24) Barone , V.; Heyd, J.; Scuseria, G. E. J. Chem. Phys. 2004, 120, 7169. (25) Gülseren, O.; Yildirim, T...Cantalini, C.; Picozzi, S.; Lozzi, L.; Santucci, S.; Sgamellotti, A.; Kenny , J. M. Chem. Phys. Lett. 2004, 387, 356. (30) Feng, X.; Irle, S.; Witek

  20. Optical Properties of Metals.

    DTIC Science & Technology

    1983-07-15

    Phys. Lett. 41 (7), 1982. 3. L.G. DeShazer, B.E. Newnam and K.M. Leung, Appl. Phys. Lett. 23, 707 (1973). 4. V. Wang, C.R. Giuliano and B. Garcia , NBS...J. F. Ready and E. Bernal G., J. Appl. Phys. 38, 331 (1967). H. F. Winters and E. J. Kay, Appl. Phys. 43, 789 (1972). P. A. Temple, D. K. Burge, and...increase is uniform throughout the sample. As discussed by Bernal G. (9), this is correct only if the sample thermal diffusivity is large and the heat

  1. ERDC MSRC Resource. High Performance Computing for the Warfighter. Spring 2006

    DTIC Science & Technology

    2006-01-01

    Metzner and D. Vollhardt, “Correlated Lattice Fermions in d=∞ Dimensions,” Phys. Rev. Lett. 62, 324 (1989). [2] A. Georges, G. Kotliar, W. Krauth , M...Simple model for semi- conductor-metal transitions: SmB6 and transition-metal oxides,” Phys. Rev. Lett. 22, 997 (1969). [6] V. Turkowski and J. K ...Freericks, “Nonlinear response of Bloch electrons in infinite dimensions,” Phys. Rev. B 71, 085104 (2005). [7] V. O. Turkowski and J. K . Freericks

  2. Differential cross sections of double photoionization of lithium

    NASA Astrophysics Data System (ADS)

    Kheifets, A. S.; Fursa, D. V.; Bray, I.; Colgan, J.; Pindzola, M. S.

    2010-08-01

    We extend our previous application of the convergent close-coupling (CCC) and time-dependent close-coupling (TDCC) methods [Phys. Rev. A10.1103/PhysRevA.81.023418 81, 023418 (2010)] to describe energy and angular resolved double photoionization (DPI) of lithium at arbitrary energy sharing. By doing so, we are able to evaluate the recoil ion momentum distribution of DPI of Li and make a comparison with recent measurements of Zhu [Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.103.103008 103, 103008 (2009)].

  3. Classical trajectory diagnosis of a fingerlike pattern in the correlated electron momentum distribution in strong field double ionization of helium.

    PubMed

    Ye, D F; Liu, X; Liu, J

    2008-12-05

    With a semiclassical quasistatic model, we identify the distinct roles of nuclear Coulomb attraction, final-state electron repulsion, and the electron-field interaction in forming the fingerlike (or V-shaped) pattern in the correlated electron momentum distribution for helium double ionization in intense laser field [Phys. Rev. Lett. 99, 263002;Phys.Rev.Lett.99, 263003 (2007)]. The underlying microscopic trajectory configurations responsible for asymmetric electron energy sharing after electron-electron collision have been uncovered, and the corresponding subcycle dynamics is analyzed. The correlation pattern is found to be sensitive to the transverse momentum of correlated electrons.

  4. Survival of Rydberg atoms in intense laser fields and the role of nondipole effects

    NASA Astrophysics Data System (ADS)

    Klaiber, Michael; Dimitrovski, Darko

    2015-02-01

    We consider the interaction of Rydberg atoms with strong infrared laser pulses using an approach based on the Magnus expansion of the time evolution operator. First-order corrections beyond the electric dipole approximation are also included in the theory. We illustrate the dynamics of the interaction at the parameters of the experiment [Eichmann et al., Phys. Rev. Lett. 110, 203002 (2013), 10.1103/PhysRevLett.110.203002]. It emerges that the depletion of Rydberg atoms in this regime comes predominantly from the nondipole effects.

  5. Compact Broad-Band Wavelength-Agile Mid-Infrared Semiconductor Lasers for Spectroscopic Sensing

    DTIC Science & Technology

    2004-12-01

    IEEE Photon. Technol. Lett. Jan 2005). Yi Wang, Chuan Peng, HuanLin Zhang, and Han Q. Le, “Wavelength modulation imaging with tunable mid- infrared...Wen-Yen Hwang, Jae Um, Bujin Guo, Hao Lee, and Chih- Hsiang Lin, “Continuous-wave operation of a 5.2 µm quantum-cascade laser up to 210 K”, Appl. Phys...Lett. 79, 1745-1747, (2001). 2. Proceedings Yi Wang, Yang Wang, Chuan Peng, HuanLin Zhang, Anush Seetheraman, and Han Q. Le, “Concepts for Scalable

  6. Hyperviscosity, Galerkin truncation, and bottlenecks in turbulence.

    PubMed

    Frisch, Uriel; Kurien, Susan; Pandit, Rahul; Pauls, Walter; Ray, Samriddhi Sankar; Wirth, Achim; Zhu, Jian-Zhou

    2008-10-03

    It is shown that the use of a high power alpha of the Laplacian in the dissipative term of hydrodynamical equations leads asymptotically to truncated inviscid conservative dynamics with a finite range of spatial Fourier modes. Those at large wave numbers thermalize, whereas modes at small wave numbers obey ordinary viscous dynamics [C. Cichowlas et al., Phys. Rev. Lett. 95, 264502 (2005)10.1103/Phys. Rev. Lett. 95.264502]. The energy bottleneck observed for finite alpha may be interpreted as incomplete thermalization. Artifacts arising from models with alpha>1 are discussed.

  7. Joint measurability and temporal steering [Invited

    NASA Astrophysics Data System (ADS)

    Karthik, H. S.; Prabhu Tej, J.; Usha Devi, A. R.; Rajagopal, A. K.

    2015-04-01

    Quintino et. al. (Phys. Rev. Lett. 113, 160402 (2014)) and Uola et. al. (Phys. Rev. Lett. 113, 160403 (2014)) have recently established an intrinsic relation between non-joint measurability and Einstein-Podolsky- Rosen steering. They showed that a set of measurements is incompatible (i.e., not jointly measurable) if and only if it can be used for the demonstration of steering. In this paper, we prove the temporal analog of this result viz., a set of measurements are incompatible if and only if it exhibits temporal steering.

  8. Confinement-induced resonance in quasi-one-dimensional systems under transversely anisotropic confinement

    NASA Astrophysics Data System (ADS)

    Peng, Shi-Guo; Bohloul, Seyyed S.; Liu, Xia-Ji; Hu, Hui; Drummond, Peter D.

    2010-12-01

    We theoretically investigate the confinement-induced resonance for quasi-one-dimensional quantum systems under transversely anisotropic confinement, using a two-body s-wave-scattering model in the zero-energy collision limit. We predict a single resonance for any transverse anisotropy, whose position shows a slight downshift with increasing anisotropy. We compare our prediction with the recent experimental result by Haller [Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.104.153203 104, 153203 (2010)], in which two resonances are observed in the presence of transverse anisotropy. The discrepancy between theory and experiment remains to be resolved.

  9. Anomalous Insulator-Metal Transition in Boron Nitride-Graphene Hybrid Atomic Layers

    DTIC Science & Technology

    2012-08-13

    locally centered atomic or- bital (LCAO) basis set, and the Perdew-Burke-Ernzerhof (PBE) exchange- correlation functional.36 The occupation of the Kohn-Sham...Stausholm-Møller, M. Strange, G. A. Tritsaris, M. Vanin, M. Walter, B. Hammer , H. Häkkinen, G. K. H. Madsen, R. M. Nieminen, J. K. Nørskov, M. Puska, T. T... Schmidt , and M. Martin, Nat. Mater. 7, 391 (2008). 43V. M. Pudalov, JETP Lett. 66, 175 (1997). 44S. Das Sarma and E. H. Hwang, Phys. Rev. Lett. 83, 164

  10. Journal of Applied Physics. Volume 63. Number 8. Part 2B. Proceedings of the Annual conference on Magnetism and Magnetic Materials (32nd) Held in Chicago, Illinois on 9-12 November 1987

    DTIC Science & Technology

    1988-04-15

    linear coupling. ’K. H. Michel and J. Naudts, Phys. Rev. Let. 39, 212 (1977). , I’Ph. Depondt and M. Debeau, 3, Phys. (Paris) 48, 1513 (1987). ’K. H... Michel , Phys. Rev. Lett. 57, 2188 (1986). IV. THE ROTATIONAL STATE HYPOTHESIS AND "’. Galam, Phys. Lett. A 122, 271 (1987). EXPERIMENTS "S. Galam, J...Reiter, Phys. Rev. 175, 631 (1968); F. Schwabl and K. H. Michel , Phys.Jo w )’- 1 . ) Rev. B 2,189 (1970). ’T. Schneider and H. R. Jauslin, Phys. Rev

  11. HTLV-1 Tax Effects on Cellular Mitotic Regulation

    DTIC Science & Technology

    2007-04-12

    2A inhibition, and anticancer activity. Bioorg Med Chem Lett 14:1969-73. 61. Hasegawa, H., H. Sawa , M. J. Lewis, Y. Orba, N. Sheehy, Y. Yamamoto, T...3. Cell 75:653-60. 131. Miyamoto, K., N. Tomita, A. Ishii , T. Nishizaki, K. Kitajima, T. Tanaka, T. Nakamura, S. Watanabe, and T. Oda. 1984

  12. Photoenergy Harvesting Organic PV Cells Using Modified Photosynthetic Light-Harvesting Complex for Energy Harvesting Materials

    DTIC Science & Technology

    2008-07-03

    7. M. Nagata, M. Nango, A. Kashiwada, S. Yamada, S. Ito, N. Sawa , M. Ogawa, K. Iida, Y. Kurono and T. Ohtsuka, Chem. Lett. 32, 216 (2003). 8. M...calculation is under 0 vias volt. 50. H. Ishii , K. Sugiyama, E. Ito, K. Seki, Adv. Mater. 11, 605 (1999). 51. R. Akiyama, T. Matsumoto, T. Kawai, T

  13. Almost-quantum correlations and their refinements in a tripartite Bell scenario

    NASA Astrophysics Data System (ADS)

    Vallins, James; Sainz, Ana Belén; Liang, Yeong-Cherng

    2017-02-01

    We study the set of almost-quantum correlations and their refinements in the simplest tripartite Bell scenario where each party is allowed to perform two dichotomic measurements. In contrast to its bipartite counterpart, we find that there already exist facet Bell inequalities that witness almost-quantum correlations beyond quantum theory in this simplest tripartite Bell scenario. Furthermore, we study the relation between the almost-quantum set and the hierarchy of supersets to the quantum set due to Navascués-Pironio-Acín (NPA) [Phys. Rev. Lett. 98, 010401 (2007), 10.1103/PhysRevLett.98.010401]. While the former lies between the first and the third level of the NPA hierarchy, we find that its second level does not contain and is not contained within the almost-quantum set. Finally, we investigate the hierarchy of refinements to the almost-quantum set due to Moroder et al. [Phys. Rev. Lett. 111, 030501 (2013), 10.1103/PhysRevLett.111.030501], which converges to the set of quantum correlations producible by quantum states having positive partial transposition. This allows us to consider (approximations of) the "biseparable" subsets of the almost-quantum set as well as of the quantum set of correlations, and thereby gain further insights into the subtle similarities and differences between the two sets. In addition, they allow us to identify candidate Bell-like inequalities that can serve as device-independent witnesses for genuine tripartite entanglement.

  14. Spoof-Like Plasmonic Behavior of Plasma Enhanced Atomic Layer Deposition Grown Ag Thin Films

    DTIC Science & Technology

    2012-01-30

    Felidj, J. Aubard, G. Levi , J. R. Krenn, A. Hohenau, G. Schider, A. Leitner, and F. R. Assenegg, Appl. Phys. Lett. 82, 3095 (2003). 2J. B. Jackson, S...94, 093105 (2009). 7J. B. Pendry, L. Martin- Moreno , and F. J. Garcia-Vidal, Science 305, 847 (2004). 8M. Kariniemi, J. Niinisto, T. Hatanpaa, M

  15. Large-momentum distribution of a polarized Fermi gas and p -wave contacts

    NASA Astrophysics Data System (ADS)

    Peng, Shi-Guo; Liu, Xia-Ji; Hu, Hui

    2016-12-01

    We present a derivation of the adiabatic energy relations as well as the large momentum distribution of a polarized Fermi gas near p -wave Feshbach resonances. The leading asymptotic behavior k-2 and subleading behavior k-4 of the large momentum distribution have recently been predicted by Z. Yu et al. [Phys. Rev. Lett. 115, 135304 (2015), 10.1103/PhysRevLett.115.135304] and by M. Y. He et al. [Phys. Rev. Lett. 116, 045301 (2016), 10.1103/PhysRevLett.116.045301] using two different approaches. Here, we show that the subleading asymptotic behavior (˜k-4 ) cannot fully be captured by the contact defined from the adiabatic energy relation related to the p -wave effective range, and there should be an extra term resulting from the center-of-mass motion of the pairs. The omission of this extra term is perhaps a reasonable approximation at zero temperature. However, it should be taken into account at finite temperature and should have significant importance to understand the recently measured momentum distribution in a resonant p -wave Fermi gas of ultracold 40K atoms [C. Luciuk et al., Nat. Phys. 12, 599 (2016), 10.1038/nphys3670].

  16. Phase-Field Analysis of Fracture-Induced Twinning in Single Crystals

    DTIC Science & Technology

    2013-07-01

    4]. Indentation experiments on ceramics and minerals often show evidence of both fracture and twinning, with surface damage strongly promoting the...tip. Phys Rev Lett 2011;107:085505. [14] Idesman A, Levitas V, Stein E. Structural changes in elastoplastic material: a unified finite-element approach

  17. Thermoelectric Transport in Surface- and Antimony-Doped Bismuth Telluride Nanoplates

    DTIC Science & Technology

    2016-07-25

    atmosphere, scale bar is 500 nm. (a) High-angle annular dark -field image, contrast is from carbon thickness; (b) Bi L-edge; (c) Sb K-edge; (d) Te K...Lundstrom, and L. Shi, Nano Lett. 13, 5316 (2013). 13 B. M. Fregoso and S. Coh, J. Phys.: Condens. Matter 27, 422001 (2015). 14 D. Hsieh, Y. Xia, D

  18. Coherence Properties of Strongly Interacting Atomic Vapors in Waveguides

    DTIC Science & Technology

    2011-12-31

    Molecular and Optical Physics Knoxville, TN, May 16-20, 2006 books, invited reviews, editorials , etc [10] Maxim Olshanii, Quantum Mechanics in Two...Rev. Lett. 99, 230402 (2007) [subcontracted under N00014-06-1-0455] [27] del Campo , A.Muga, J. G., Girardeau, M. D, Stability of spinor Fermi gases

  19. Singularities and Spatial Fluctuations in Submonolayer Epitaxy

    NASA Astrophysics Data System (ADS)

    Vvedensky, D. D.; Ratsch, C.; Gibou, F.; Vardavas, R.

    2003-05-01

    A Comment on the Letter by

    Jacques G. Amar, Mihail N. Popescu, and Fereydoon Family, Phys. Rev. Lett.PRLTAO0031-9007 86, 3092 (2001)
    . The authors of the Letter offer a Reply.

  20. Phase and Frequency Control of Laser Arrays for Pulse Synthesis

    DTIC Science & Technology

    2015-01-02

    Lett. 24, 303- 305 (1999). 16. A. Wilson, J. Sharpe, C. McKenzie , P. Manson, and D. Warrington, Appl. Opt. 37, 4871-4875 (1998). 17. J. Kangara, A...Sharpe, C. McKenzie , P. Manson, and D. Warrington, "Narrow-linewidth master-oscillator power amplifier based on a semiconductor tapered amplifier," Appl

  1. Excited-State Structure of Oligothiophene Dendrimers: Computational and Experimental Study

    DTIC Science & Technology

    2010-01-01

    supramolecular calculations of the systems with strong covalent bonding and high geometrical disorder. Approximations to the excitation energies are often done...Badaeva et al. (73) Kobko, N.; Masunov, A.; Tretiak, S. Chem. Phys. Lett. 2004, 392, 444–451. (74) Bartholomew , G. P.; Rumi, M.; Pond, S. J. K.; Perry, J

  2. Intermittently Decreased Beat-To-Beat Variability in Congestive Heart Failure

    NASA Astrophysics Data System (ADS)

    Wessel, Niels; Schirdewan, Alexander; Kurths, Jürgen

    2003-09-01

    A Comment on the Letter by

    Madalena Costa, Ary L. Goldberger, and C.-K. Peng, Phys. Rev. Lett.PRLTAO0031-9007 89, 068102 (2002)
    . The authors of the Letter offer a Reply.

  3. Thermal noise can facilitate energy conversion by a ratchet system.

    PubMed

    Takagi, F; Hondou, T

    1999-10-01

    Molecular motors in biological systems are expected to use ambient fluctuation. In a recent paper [Phys. Rev. Lett. 80, 5251 (1998)], it was shown that the following question was unanswered: Can thermal noise facilitate energy conversion by ratchet system? We consider it using stochastic energetics, and show that there exist systems where thermal noise helps the energy conversion.

  4. Proving and Improving Wave Models in the Arctic Ocean and its MIZ

    DTIC Science & Technology

    2014-09-30

    on a giant ice island in Baffin Bay, in which the response to a breakup event was measured and the size of the broken-out iceberg fragment tested...Abrahamsen, A. Cerawford and K.W. Nicholls (2014). The “footloose” mechanism: iceberg decay from hydrostatic stresses. Geophys. Res. Lett., 41, 5522-5529, doi:10.1002/2014GL060832. 5

  5. Ultra-Sensitive Biological Detection via Nanoparticle-Based Magnetically Amplified Surface Plasmon Resonance (Mag-SPR) Techniques

    DTIC Science & Technology

    2008-10-08

    HH, Williams ID, Kwok HS, Tang BZ. Chem Phys Lett 2006;428:326-30. [16] Yu Z, Li W, Hagen JA, Zhou Y, Klotzkin D, Grote JG, Steckl AJ. Appl Optics...Investigator: Professor H. Thomas Hahn Co-Investigator: Dr. Zhe Wang 3.1. Objective The aim of Task III is to develop processing methods for

  6. Infrared and Electrical Properties of Amorphous Sputtered (LaxA1l-x)2O3 films

    DTIC Science & Technology

    2003-01-01

    Appl. Phys. Lett. 78, 1832 ~2001!. 10 I. Bunget and M. Popescu, Physics of Solid Dielectrics ~Elsevier, Amster- dam , 1984!, Chap. 6. 11 A. S. Barker...Thomsen, Phys. Rev. B 59, 4146 ~1999!. 13 M. L. Tuma ~private communication!. 14 G. Samara , J. Appl. Phys. 68, 4214 ~1990!. 15 O. Medenbach, D. Dettmar

  7. The Crustal and Mantle Velocity Structure in Central Asia from 3D Travel Time Tomography

    DTIC Science & Technology

    2010-09-01

    to the southern margin of Asia during the Paleozoic- Mesozoic closure of the Tethys Ocean (Tapponnier et al., 1981; Burtman and Molnar, 1993; Yin...Proust, and C. Cassaigneau (1981). Mesozoic ophiolites, sutures, and large scale tectonic movements in Afghanistan, Earth Planet. Sci. Lett. 52: 355–371

  8. Theoretical analysis and modeling of a photonic integrated circuit for frequency 8-tupled and 24-tupled millimeter wave signal generation: erratum.

    PubMed

    Hasan, Mehedi; Guemri, Rabiaa; Maldonado-Basilio, Ramón; Lucarz, Frédéric; de Bougrenet de la Tocnaye, Jean-Louis; Hall, Trevor

    2015-12-15

    A novel photonic circuit design for implementing frequency 8-tupling and 24-tupling was presented [Opt. Lett.39, 6950 (2014)10.1364/OL.39.006950OPLEDP0146-9592], and although its key message remains unaltered, there were typographical errors in the equations that are corrected in this erratum.

  9. Deriving Lindblad master equations with Keldysh diagrams: Correlated gain and loss in higher order perturbation theory

    NASA Astrophysics Data System (ADS)

    Müller, Clemens; Stace, Thomas M.

    2017-01-01

    Motivated by correlated decay processes producing gain, loss, and lasing in driven semiconductor quantum dots [Phys. Rev. Lett. 113, 036801 (2014), 10.1103/PhysRevLett.113.036801; Science 347, 285 (2015), 10.1126/science.aaa2501; Phys. Rev. Lett. 114, 196802 (2015), 10.1103/PhysRevLett.114.196802], we develop a theoretical technique by using Keldysh diagrammatic perturbation theory to derive a Lindblad master equation that goes beyond the usual second-order perturbation theory. We demonstrate the method on the driven dissipative Rabi model, including terms up to fourth order in the interaction between the qubit and both the resonator and environment. This results in a large class of Lindblad dissipators and associated rates which go beyond the terms that have previously been proposed to describe similar systems. All of the additional terms contribute to the system behavior at the same order of perturbation theory. We then apply these results to analyze the phonon-assisted steady-state gain of a microwave field driving a double quantum dot in a resonator. We show that resonator gain and loss are substantially affected by dephasing-assisted dissipative processes in the quantum-dot system. These additional processes, which go beyond recently proposed polaronic theories, are in good quantitative agreement with experimental observations.

  10. Activation of Autophagy in Response to Nanosecond Pulsed Electric Field Exposure

    DTIC Science & Technology

    2015-02-07

    induction (Fig. 2, bottom row). 3.3. Cyto-ID immunofluorecence As the autophagic process develops, autophagosomes fuse with lysosomes to deliver...protective effect of autophagy on mouse spermatocyte derived cells exposure to 1800 MHz radiofrequency electromagnetic radiation, Toxicol. Lett. 228

  11. Dissipative Particle Dynamics at Isothermal Conditions Using Shardlow-Like Splitting Algorithms

    DTIC Science & Technology

    2013-09-01

    15, 16), den Otter -Clarke integrator (17), first- and second- order Shardlow-splitting algorithms (SSAs) (18), and Lowe-Andersen integrator (19). Still...den Otter , W. K.; Clarke, J. H. R. A New Algorithm for Dissipative Particle Dynamics. Europhys. Lett. 2001, 53, 426. 18. Shardlow, T. Splitting

  12. Novel E-O Polymers: NLO Materials with Superior Temporal Stability

    DTIC Science & Technology

    1994-09-01

    Warfare Center, July, 1991. 13. Mai Chen et al., American Chemical Society 24(19), p.5421, 1991. 14. Schaffner, J.H. and R.R Hayes, Integrated Photonics Research, 1991. 15. C. C. Teng, AppL Phys. Lett, 6Q, (1992) 1538. 19

  13. Bridging Between Photonic Scales

    DTIC Science & Technology

    2005-10-29

    Science Foundation’s CAREER Grant Lett. 29, 1626 (2004). No. 0446571. The authors would also like to thank [15] C. Pollock and M. Lipson, Integrated ... Photonics (Kluwer Gernot Pomrenke from the Air Force Office of Scientific Academic, Dordrecht, 2003). Research for supporting the work under Grants [16

  14. Three-Dimensional Control of Self-Assembled Quantum Dot Configurations

    DTIC Science & Technology

    2010-06-17

    Lateral Quantum Dot Molecules Around Self-Assembled Nanoholes . Appl. Phys. Lett. 2003, 82, 2892–2894. 7. Alonso-Gonzalez, P.; Martin-Sanchez, J.; Gonzalez...Y.; Alen, B.; Fuster, D.; Gonzalez, L. Formation of Lateral Low Density In(Ga)As Quantum Dot Pairs in GaAs Nanoholes . Cryst. Growth Des. 2009, 9

  15. Influence of shape resonances on minima in cross sections for photoionization of excited atoms

    SciTech Connect

    Felfli, Z.; Manson, S.T. Department of Astronomy, Georgia State University, Atlanta, Georgia 30303 )

    1990-02-01

    A relationship between the location of Cooper minima and the difference between the quantum defect of the initial state and the threshold phase shift (in units of {pi}) of the final state in excited photoionization has been suggested earlier (Phys. Rev. Lett. 48, 473 (1982)). The existence of a shape resonance in the final state is shown to modify this relationship.

  16. Controlling Interacting Systems in Noisy Environments

    DTIC Science & Technology

    2010-01-11

    in driven systems requires that one knows how a system moves in an activated process. Even though an activated process happens at random, when it does...2968–2973, IEEE, Piscataway, NJ, 2001. [22] Herbert Levine and William Reynolds. Streaming instability of aggregating slime mold amoebae . Phys. Rev. Lett

  17. Controlling Interacting Systems in Noisy Environments

    DTIC Science & Technology

    2010-10-06

    scaling dependence on control parameters at all. Gain- ing an insight into escape in driven systems requires that one knows how a system moves in an...Reynolds. Streaming instability of aggregating slime mold amoebae . Phys. Rev. Lett., 66(18):2400–2403, May 1991. [23] K. M. Lynch, I. B. Schwartz, P

  18. GaN High Power Electronics

    DTIC Science & Technology

    2011-02-01

    figure 12, that people have to go to extraordinary measures to reduce the effects of the lattice mismatch by growing a transition AlGaN buffer layer...Cao, X. A.; Lu, H.; LeBoeuf, S. F.; Cowen, C.; Arthur, S. D. Appl. Phys. Lett. 2005, 87, 053503. 18. Taniyasu, 1. Y.; Kasu, M.; Makimoto , T. Appl

  19. Computer Simulation of Intense Electron Beam Generation in a Hollow Cathode Diode.

    DTIC Science & Technology

    1980-09-05

    Phys. Rev. Lett. 40, 1504 (1978).I ’ 9. Robert K. Parker, Technical Report AFWL-TR-73-92, USAF Weapons Lab., Albuquerque, New Mexico (1973). , 12 .% xv...t C. Bruno (1 copy) J. Barbaro (. copy) Ecole Polytechnique ft Labo, PMI 91128 Palaiseau Cedex France Attn: 11. Doucet (1 copy) J. M. Buzzi (1 copy

  20. Classical-field methods for atom-molecule systems

    NASA Astrophysics Data System (ADS)

    Sahlberg, Catarina E.; Gardiner, C. W.

    2013-02-01

    We extend classical-field methods [Blakie , Adv. Phys.ADPHAH0001-873210.1080/00018730802564254 57, 363 (2008)] to provide a description of atom-molecule systems. We use a model of Bose-Einstein condensation of atoms close to a Feshbach resonance, in which the tunable scattering length of the atoms is described using a system of coupled atom and molecule fields [Holland , Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.86.1915 86, 1915 (2001)]. We formulate the basic theoretical methods for a coupled atom-molecule system, including the determination of the phenomenological parameters in our system, the Thomas-Fermi description of Bose-Einstein condensate, the Bogoliubov-de Gennes equations, and the Bogoliubov excitation spectrum for a homogenous condensed system. We apply this formalism to the special case of Bragg scattering from a uniform condensate and find that for moderate and large scattering lengths, there is a dramatic difference in the shift of the peak of the Bragg spectra, compared to that based on a structureless atom model. The result is compatible with the experimental results of Papp [Phys. Rev. LettPRLTAO0031-900710.1103/PhysRevLett.101.135301 101, 135301 (2008)] for Bragg scattering from a nonuniform condensate.

  1. Investigation of Precursor Superconducting State in YBa2Cu3O7-δ through In-Plane Optical Spectroscopy

    NASA Astrophysics Data System (ADS)

    Lee, Kegan; Kamiya, Keisuke; Nakajima, Masamichi; Miyasaka, Shigeki; Tajima, Setsuko

    2017-02-01

    A precursor of superconductivity has been searched in the in-plane optical spectra of underdoped YBa2Cu3Oy, in which the previous c-axis optical spectra showed the presence of superconducting carriers at a temperature far above Tc [Uykur et al., Lett.112.127003" xlink:type="simple">Phys. Rev. Lett. 112, 127003 (2014)][Dubroka et al., Lett.106.047006" xlink:type="simple">Phys. Rev. Lett. 106, 047006 (2011)]. By carefully subtracting the normal component from the imaginary part of conductivity σ2(ω), we found a clear in-plane response of superconducting condensate at the temperature consistent with the c-axis optical data. This confirms that the precursory superconductivity developing with decreasing doping level is an intrinsic phenomenon in the cuprates.

  2. The Effects of Cyanide on Neural and Synaptic Function in Hippocampal Slices

    DTIC Science & Technology

    1989-01-01

    vitro. Neurosci transmission, although these mechanisms have Lett, 1986; 67:92-96 yet to be investigated in detail. Albaum HG, Tepperman J, Bodansky 0...eso e~e on neuron not mediated by ift kghWn of metabolism. e i m knot Nsa ., we.

  3. Exact Solution of a Quantum Forced Time-Dependent Harmonic Oscillator

    DTIC Science & Technology

    1991-06-01

    has met with limited success because of analytical difficulties, although progress has been made during the past three decades. 1 -5 Camiz et al6 have...M. R. Felx, E. Fijalkow and A. Munier, Phys. Lett. A 74, 11 (1979). 5. J. G. Hartly and J. R. Ray, Phys. Rev. A 2_4, 2873 (1981). 6. P. Camiz , A

  4. Magnetic-field-induced bistability in resonant tunneling

    NASA Astrophysics Data System (ADS)

    Brown, S. A.; Macks, L. D.

    1998-07-01

    We report an unusual magnetic-field-induced bistability in the current-voltage characteristic of an asymmetric double-barrier resonant tunneling structure. It is suggested that this bistability is the experimental manifestation of self-sustained current oscillations that have recently been predicted by Orellana, Anda, and Claro [Phys. Rev. Lett. 79, 1118 (1997)].

  5. PH-Sensitive WO(3)-Based Microelectrochemical Transistors.

    DTIC Science & Technology

    1986-09-22

    C. J. Electrochem. Soc., 1976, 123, 527; (b) Rabelais , J. W.; Colton, R. J.; Guzman, A. M. Chem. Phys. Lett., 1974, 29, 131; (c) Colton, R. J...Guzman, A. M.; Rabelais , J. W. J. AoD1. Phys., 1978, 42, 409; (d) Dickens, P. G.; Birtill, J. J. J. Electron. Mat., 1978, 7, 679. 18. (a) Dautremont-Smith

  6. PH-Sensitive Ni(OH)2-Based Microelectrochemical Transistors.

    DTIC Science & Technology

    1986-11-24

    Electrochem. Soc., 196 123, 527; (b) Rabelais , J. W.; Colton, R. J.; Guzman, A. M. Chem. Phys. Lett., 1974, a,1 131; (c) Colton, R. J.; Guzman, A. M... Rabelais , J. W. J.A~pl Phs. 1978, A2j, 409; (d) Dickens, P. G.; Birtill, J. J. J. Electron. Ma. 1978,~ 2, 679. 12. (a) Gottesfeld, S. J. Electrochem

  7. Diffusion of Helium Isotopes in Silicate Glasses and Minerals: Implications for Petrogenesis and Geochronology.

    DTIC Science & Technology

    1989-06-01

    kimberlite pipe. Earth Plan. Sci. Let. 86, 57-68. 77 LOTT D.E. and JENKINS W.J. (1984) An automated cryogenic charcoal trap system for helium isotope...isotopic variability within single diamonds from the Orapa kimberlite pipe. Earth Planet. Sci. Lett. 86, 57-68. 350 KUSHIRO I. (1975) On the nature of

  8. Cusp Anomalous Dimension in Maximally Supersymmetric Yang-Mills Theory

    NASA Astrophysics Data System (ADS)

    Kotanski, J.

    2008-12-01

    The main features of the cusp anomalous dimension in N=4 supersymmetric Yang-Mills theory are reviewed. Moreover, the strong coupling expansion of the cusp derived in B. Basso, G.P. Korchemsky, J. Kotanski, Phys. Rev. Lett. 100, 091601 (2008) is presented.

  9. A Study of Polynuclear Aromatic Hydrocarbons on an Amino Bonded Phase Liquid Chromatographic Column in the Normal and Reversed Phase.

    DTIC Science & Technology

    1982-11-24

    Material, Anal. Lett. 9, 957, 1976. 8. Galya, L. C. and Suatoni, J. C., Rapid SARA Separation by High Performance Liquid Chromatography , 3, 229, 1980. 9... High Performance Liquid Chromatography , J. Chromatogr., 174, 2919 1979. 20. Goldstein, G., Separation of Polycyclic Aromatic Hydrocarbons by Liquid

  10. Time-Resolved Electronic Relaxation Processes in Self-Organized Quantum Dots

    DTIC Science & Technology

    2005-05-16

    Colocci, A. Bosacchi, P. Frigeri , and S. Franchi, Appl. Phys. Lett. 69, 3354 (1996). 8. P. Battacharya, K. K. Kamath, J. Singh, D. Klotzkin, J...Sercel, Phys. Rev. B 56, 13314 (1997). 23. S. Sanguinetti, M. Henini, M. Grassi Alessi, M. Capizzi, P. Frigeri , and S. Franchi, Phys. Rev. B 60, 8276

  11. Collaborative Research and Development (CR&D). Delivery Order 0053: Multiscale Modeling Support

    DTIC Science & Technology

    2008-02-01

    interfaces. 1. J. Gao, W. D. Luedtke, and U . Landman, J. Phys. Chem., 101, 4013 (1997). 2. R. Lim and S. J. O’Shea, Phys. Rev. Lett., 88, 246101 (2002...J.F.V. and U.G.K. Wegst , Design and mechanical properties of insect cuticle. Anthropod Structure and Development, 2004. 33: p. 187-199. 3. Andersen

  12. Growth of High-Quality Carbon Nanotudes on Free-Standing Diamond Substrates (Postprint)

    DTIC Science & Technology

    2010-03-01

    desired devices. For example, chip cooling with CNT microfin architectures have been recently proposed by Kordas et al. [5]. CNT films as thermal...et al. Chip cooling with integrated carbon nanotube microfin architectures. Appl Phys Lett 2007; 90: 123105 1 123105 3. [6] Zhu L, Hess DW, Wong CP

  13. Indium Gallium Nitride/Gallium Nitride (InGaN/GaN) Nanorods Superlattice (SL)

    DTIC Science & Technology

    2006-03-29

    distinct dislocation network and side wall damage are observed as shown in the upper inset of Fig. 10 which indicates an image of transmission electron...Phys. 76, 304 (1994). [42] W. I. Lee, T. C. Huang, J. Guo, and M. S. Feng, Appl. Phys. Lett. 67, 1721 (1995). [43] D. G. Thomas, J. J. Hopfield , and W

  14. a Mean-Field Version of the Ssb Model for X-Chromosome Inactivation

    NASA Astrophysics Data System (ADS)

    Gaeta, Giuseppe

    Nicodemi and Prisco recently proposed a model for X-chromosome inactivation in mammals, explaining this phenomenon in terms of a spontaneous symmetry-breaking mechanism [{\\it Phys. Rev. Lett.} 99 (2007), 108104]. Here we provide a mean-field version of their model.

  15. Turbulent Dufour effect and Onsager-type relations.

    PubMed

    Sancho, P

    1999-08-01

    In this paper we extend the work of Elperin et al. [Phys. Rev. Lett. 80, 69 (1998)] by showing that a turbulent Dufour-type effect is also present in chemically nonreacting gaseous admixtures. This result is used to analyze the possibility of obtaining turbulent analogs of the Onsager relations, a fundamental result for molecular crossed effects in irreversible thermodynamics.

  16. Macroscopic Quantum Coherence and Computing

    DTIC Science & Technology

    2010-02-17

    A. Gubrud, A. J. Berkley, J. R. Anderson, C. J. Lobb, and F. C. Wellstood, IEEE Trans AppI Supr 11,998 (2001) [2] J. M. Martinis, S. Nam, J. Aumentado...al., Phys. Rev. Lett. 87, 217003 (2001) [5] M. Savolainen, et. al., to be published in Appi . Phys. A (2004), cond-mat/031 1383 Modelling the current

  17. Studies of Energy Storage and Transfer in Gas Lasers.

    DTIC Science & Technology

    2014-09-26

    Letokhov, AppI . PhyS. 24, 89 (1981). 2. J. J. Tiee, M. J. Ferris, G. W. Loge and F. B. Wampler, Chem. Phys. Lett. 96, 422 (1983). 3. 5. Arepalli...personal communication. 4. T. A. Cool, AppI . Opt. 23, 1558 (1984). 5. S. Leone, personal communication 6. J. Husain, J. R. Wiesenfeld and R. N. Zare, J

  18. Electronic States of the XenHc1 Systems in Gas and Condensed Phases.

    DTIC Science & Technology

    1988-05-01

    P. W. Tiedemann, J. J. Valentini and Y. T. Lee, J. Chem. Phys. 21, 481 (1979); (b) H. Schwann and B. Schramm, Chem. Phys. Lett. 130, 29 (1986); (c) H...Science Massachusetts Institute of Technology Dr. Theodore E. Madey Cambridge, Massachusetts 02139 Surface Chemistry Section Department of Commerce Dr. S

  19. Patterns of Indian Ocean Sea-Level Change in a Warming Climate

    DTIC Science & Technology

    2010-08-01

    and it results from wind-driven mass redistribution, with global thermal expansion and salinity effects18 increasing the basin-mean sea level...Ocean. RemoteSens. Lett. 6, 332-336 (2009). 24. Giannini, A. et al. Oceanic forcing of Sahel rainfall on interannual to interdecadal time scales

  20. Bounds on the Number and Size of Extra Dimensions from Molecular Spectroscopy

    NASA Astrophysics Data System (ADS)

    Salumbides, Edcel John; Schellekens, Bert; Gato-Rivera, Beatriz; Ubachs, Wim

    2015-06-01

    Modern string theories, which seek to produce a consistent description of physics beyond the Standard Model that also includes the gravitational interaction, appear to be most consistent if a large number of dimensions are postulated. For example the mysterious M-theory, which generalizes all consistent versions of superstring theories, require 11 dimensions. We demonstrate that investigations of quantum level energies in simple molecular systems provide a testing ground to constrain the size of compactified extra dimensions, for example those proposed in the ADD [1] and RS scenarios [2]. This is made possible by the recent progress in precision metrology with ultrastable lasers on energy levels in neutral molecular hydrogen (H_2, HD and D_2) [3] and the molecular hydrogen ions (H_2^+, HD^+ and D_2^+) [4]. Comparisons between experiment and quantum electrodynamics calculations for these molecular systems can be interpreted in terms of probing large extra dimensions, under which conditions gravity will become much stronger. Molecules are a probe of space-time geometry at typical distances where chemical bonds are effective, i.e. at length scales of an Å. [1] N. Arkani-Hamed, S. Dimopoulos and G. Dvali, Phys. Lett. B 429, 263 (1998) [2] L. Randall and R. Sundrum, Phys. Rev. Lett. 83, 3370 (1999). [3] G. Dickenson et al., Phys. Rev. Lett. 110, 193601 (2013). [4] J. C. J. Koelemeij et al., Phys. Rev. Lett. 98, 173002 (2007).

  1. Probing and Manipulating Protein Conformation Changes by Time-Resolved Single-Molecule Spectroscopy and Site-Specific Ultramicroscopy

    DTIC Science & Technology

    2008-04-01

    Biomolecular Recognition with Single Molecule Dynamics,” Phys. Rev. Lett. 98, 128105 (2007). 4. V. Biju, D. Pan, Yuri A. Gorby , Jim Fredrickson, J. Mclean, D...Protein Interactions of Calmodulin by Single-Molecule Spectroscopy," J. Am. Chem. Soc. 128, 10034-10042 ( 2006 ).

  2. Spin orbit torques and chiral spin textures in ultrathin magnetic films (Presentation Recording)

    NASA Astrophysics Data System (ADS)

    Beach, Geoffrey S.

    2015-09-01

    Spin orbit coupling at interfaces can give rise to chiral magnetic textures such as homochiral domain walls and skyrmions, as well as current-induced torques that can effectively manipulate them [1-3]. This talk will describe interface-driven spin-orbit torques and Dzyaloshinskii-Moriya interactions (DMIs) in ultrathin metallic ferromagnets adjacent to nonmagnetic heavy metals. We show that the DMI depends strongly on the heavy metal, differing by a factor of ~20 between Pt and Ta [4], and describe the influence of strong DMI on domain wall dynamics and spin Hall effect switching [5]. We present high-resolution magnetic force microscopy imaging of static magnetic textures that directly reveal the role of DMI and allow its strength to be quantified. Finally, we will describe how SOTs can be enhanced through interface engineering [6] and tuned by a gate voltage [7] by directly controlling the interfacial oxygen coordination at a ferromagnet/oxide interface [8]. [1] A. Thiaville, et al., Europhys. Lett. 100, 57002 (2012). [2] S. Emori, et al., Nature Mater. 12, 611 (2013). [3] J. Sampaio, V. Cros, S. Rohart, A. Thiaville, and A. Fert, Nature Nano. 8, 839 (2013). [4] S. Emori, et al., Phys. Rev. B 90, 184427 (2014). [5] N. Perez, et al., Appl. Phys. Lett. 104, 092403 (2014). [6] S. Woo, et al., Appl. Phys. Lett. 105, 212404 (2014). [7] S. Emori, et al., Appl. Phys. Lett. 105, 222401 (2014). [8] U. Bauer, et al., Nature Mater. 14, 174 (2015).

  3. Boltzmann Machines and Artificial Intelligence,

    DTIC Science & Technology

    1985-06-01

    Memorandum 3815. Mackenzie, N.D., and Young, A.P., "Lack of ergodicity in the infinite-range * Ising spin - glass ", Phys. Rev. Lett., 49 (1982) 301-304...34, American Elsevier, New York, 19?6. Young, A.P., and Kirkpatrick, S., "Low-temperature behavior of the infinite-range Ising spin - glass : exact

  4. The Feasibility of Event Sequence Discrimination for the Improvement of Gamma-Ray Spectrometer Sensitivity

    DTIC Science & Technology

    1989-12-29

    Inst. and Meth. in Phys, Res. 223: 420-425; 1984. Mi86 Michel , C.; Emling, H.; Grosse, E.; Azgui, F.; Grein, H.; Wollersheim, H.J.; Gaardhoje, J.J...Behavior in an Elecrton Hole Plasma in Ge." Phys. Rev. Lett. 52: 1037-1040; 1984. Hu85 Hulin , D.; Coinbescot, M.; Bok, J.; Migus, A.; Antonetti, A.; Vinet

  5. Band gap engineering via doping: A predictive approach

    NASA Astrophysics Data System (ADS)

    Andriotis, Antonis N.; Menon, Madhu

    2015-03-01

    We employ an extension of Harrison's theory at the tight binding level of approximation to develop a predictive approach for band gap engineering involving isovalent doping of wide band gap semiconductors. Our results indicate that reasonably accurate predictions can be achieved at qualitative as well as quantitative levels. The predictive results were checked against ab initio ones obtained at the level of DFT/SGGA + U approximation. The minor disagreements between predicted and ab initio results can be attributed to the electronic processes not incorporated in Harrison's theory. These include processes such as the conduction band anticrossing [Shan et al., Phys. Rev. Lett. 82, 1221 (1999); Walukiewicz et al., Phys. Rev. Lett. 85, 1552 (2000)] and valence band anticrossing [Alberi et al., Phys. Rev. B 77, 073202 (2008); Appl. Phys. Lett. 92, 162105 (2008); Appl. Phys. Lett. 91, 051909 (2007); Phys. Rev. B 75, 045203 (2007)], as well as the multiorbital rehybridization. Another cause of disagreement between the results of our predictive approach and the ab initio ones is shown to be the result of the shift of Fermi energy within the impurity band formed at the edge of the valence band maximum due to rehybridization. The validity of our approach is demonstrated with example applications for the systems GaN1-xSbx, GaP1-xSbx, AlSb1-xPx, AlP1-xSbx, and InP1-xSbx.

  6. Optoelectronic III-V Heterostructures on SI Substrates

    DTIC Science & Technology

    1990-09-14

    December 1989. VI. PERSONNEL Gary Y. Robinson, Principal Investigator Mike J. Hafich, Research Associate Todd E. Crumbaker, Graduate Student, Ph.D...and G.E. Stillman, AppL. Phys. Let- 54, 1457 (1989). 7. M.A. Haase, M.A. Emmanuel , S.C. Smith,. U. Coleman, and G.E. Stillman, Appl. Phys. Lett. 50

  7. A New Class of Solid-Solid Phase Transformations Involving a Composition-Dependent Displacive Component (Preprint)

    DTIC Science & Technology

    2011-07-01

    mechanical and superconducting properties [2– 5]. It is now widely accepted that athermal ω precipi- tates retain the composition of the parent β matrix...Rev. Lett. 78, 1396 (1997). [18] H. Jònsson, G. Mills , & K. Jacobsen, Classical and Quan- tum Dynamics in Condensed Phase Simulations (World

  8. Comment on ‘Dengue viral infection monitoring from diagnostic to recovery using Raman spectroscopy’

    NASA Astrophysics Data System (ADS)

    Darvin, Maxim E.; Lademann, Juergen; Brandt, Nikolay N.

    2016-04-01

    The results of the letter ‘Dengue viral infection monitoring from diagnostic to recovery using Raman spectroscopy’ authored by Firdous and Anwar (2015 Laser Phys. Lett. 12 085601) are discussed. We show that the original interpretation of the results is not correct and does not correspond to data in the literature.

  9. Relaxation of Fermionic Excitations in a Strongly Attractive Fermi Gas in an Optical Lattice

    DTIC Science & Technology

    2011-09-27

    energy physics of the repulsive Hubbard model reduces to an antiferro- magnetic Heisenberg model which exhibits a canted anti- ferromagnetic (CAFM...Oka, P. Werner , and H. Aoki, Phys. Rev. Lett. 106, 236401 (2011); M. Eckstein and P. Werner , Phys. Rev. B 84, 035122 (2011); A. L. Chudnovskiy, D.M

  10. Estimation on Geometric Measure of Quantum Coherence

    NASA Astrophysics Data System (ADS)

    Zhang, Hai-Jun; Chen, Bin; Li, Ming; Fei, Shao-Ming; Long, Gui-Lu

    2017-02-01

    We study the geometric measure of quantum coherence recently proposed in [Phys. Rev. Lett. 115, 020403 (2015)]. Both lower and upper bounds of this measure are provided. These bounds are shown to be tight for a class of important coherent states -- maximally coherent mixed states. The trade-off relation between quantum coherence and mixedness for this measure is also discussed.

  11. Experimental Control of Instabilities and Chaos in Fast Dynamical Systems

    DTIC Science & Technology

    1997-06-01

    is short (- 10 cm) [153]-[155]; these studies have more recently been considered from the chaos control viewpoint [42]. The apparatus required to...13] Christini, David J., and James A. Collins. Controlling Nonchaotic Neuronal Noise Using Chaos Control Techniques. Phys. Rev. Lett. 75:2782-2785

  12. Hydrodynamics of Leidenfrost droplets in one-component fluids

    NASA Astrophysics Data System (ADS)

    Xu, Xinpeng; Qian, Tiezheng

    2013-04-01

    Using the dynamic van der Waals theory [Phys. Rev. E10.1103/PhysRevE.75.036304 75, 036304 (2007)], we numerically investigate the hydrodynamics of Leidenfrost droplets under gravity in two dimensions. Some recent theoretical predictions and experimental observations are confirmed in our simulations. A Leidenfrost droplet larger than a critical size is shown to be unstable and break up into smaller droplets due to the Rayleigh-Taylor instability of the bottom surface of the droplet. Our simulations demonstrate that an evaporating Leidenfrost droplet changes continuously from a puddle to a circular droplet, with the droplet shape controlled by its size in comparison with a few characteristic length scales. The geometry of the vapor layer under the droplet is found to mainly depend on the droplet size and is nearly independent of the substrate temperature, as reported in a recent experimental study [Phys. Rev. Lett.10.1103/PhysRevLett.109.074301 109, 074301 (2012)]. Finally, our simulations demonstrate that a Leidenfrost droplet smaller than a characteristic size takes off from the hot substrate because the levitating force due to evaporation can no longer be balanced by the weight of the droplet, as observed in a recent experimental study [Phys. Rev. Lett.10.1103/PhysRevLett.109.034501 109, 034501 (2012)].

  13. Edge reconstructions in fractional quantum Hall systems.

    NASA Astrophysics Data System (ADS)

    Joglekar, Yogesh; Nguyen, Hoang; Murthy, Ganpathy

    2003-03-01

    Two dimensional electron systems exhibiting fractional quantum Hall effects are characterized by a quantized Hall conductance and a dissipationless bulk. The transport in these systems occurs only at the edges where gapless excitations are possible [1]. We present a microscopic calculation of these egde-states at filling factors ν=1/3 and ν=2/5 using the Hamiltonian theory of the fractional quantum Hall effect [2]. We find that the quantum Hall egde undergoes a reconstruction as the confining potential, produced by the background charge density, softens [3,4]. Our results have implications to the tunneling experiments into the edge of a fractional quantum Hall system [5]. 1: X. G.Wen, Phys. Rev. Lett. 64, 2206 (1990). 2: R. Shankar and G. Murthy, Phys. Rev. Lett. 79, 4437 (1997). 3: C. de C. Chamon and X. G. Wen, Phys. Rev. B 49, 8227 (1994). 4: X. Wan, K. Yang, and E. H. Razayi, Phys. Rev. Lett. 88, 056802 (2002). 5: A.M.Chang et al., Phys. Rev. Lett. 86, 143 (2000).

  14. Elastic swimming I: Optimization

    NASA Astrophysics Data System (ADS)

    Lauga, Eric; Yu, Tony; Hosoi, Anette

    2006-03-01

    We consider the problem of swimming at low Reynolds number by oscillating an elastic filament in a viscous liquid, as investigated by Wiggins and Goldstein (1998, Phys Rev Lett). In this first part of the study, we characterize the optimal forcing conditions of the swimming strategy and its optimal geometrical characteristics.

  15. Elastic swimming II: Experiments

    NASA Astrophysics Data System (ADS)

    Yu, Tony; Lauga, Eric; Hosoi, Anette

    2006-03-01

    We consider the problem of swimming at low Reynolds number by oscillating an elastic filament in a viscous liquid, as investigated by Wiggins and Goldstein (1998, Phys Rev Lett). In this second part of the study, we present results of a series of experiments characterizing the performance of the propulsive mechanism.

  16. Polymer Engineering: Polymeric and Molecular Electronic, Dielectric and Optical Properties for Device Applications,

    DTIC Science & Technology

    1985-01-01

    lI -?" Poeleetl,194: Beso et al.. 1983). Thi; remarkable t-ransition is accompanied by an abrupt increase in the electrical conductivity of the...P. C, Appi. Phv.s. Lett, 4 1 (19254 Potember. P.S5 Poehier, J. Phys. ( Paris - ’ Colloque C 44 (19 33) 17160 villiarns, D.J.ed Nonlinear Optical

  17. Valence, Charge Transfer and Carrier Type for Bi2Sr2Can-1CunO2(n+4+delta) and Related High Temperature Ceramic Superconductors

    DTIC Science & Technology

    1988-09-30

    decreases to zero at the lower transition as expected. However, there are numerous known cases where the thermopower h ~s the opposite sign of the...Sun, Y.Y.; Wang, Y.Q.; Xue, Y.Y. Phys. Rev. Lett. 1988, 60 2. Takayama-Muromachi, Eiji; Uchida, Yashishige; Ono, Adira; Izusi, Fujio; Onoda , Mitsuki

  18. Modulation Effects in Multi-Section Semiconductor Lasers (Postprint)

    DTIC Science & Technology

    2013-01-01

    resonant modulation of semiconductor lasers beyond relaxation oscillation frequency,” Appl. Phys. Lett., 63, 1459–1461 (1993). [26] J. Helms and K. Petermann ...5, 4–6 (1993). [28] K. Petermann , “External optical feedback phenomena in semiconductor lasers,” IEEE J. Sel. Top. Quantum Elec- tron., 1, 480–489

  19. Tailoring Chirp in Spin-Lasers

    NASA Astrophysics Data System (ADS)

    Lee, Jeongsu; Boeris, Guilhem; Vyborny, Karel; Zutic, Igor

    2012-02-01

    The interplay of spin injection in lasers and their nonlinear response leads to novel spintronic devices [1]. Such spin-lasers can enable desirable properties including threshold reduction, bandwidth enhancement, and low chirp [1-3]. These lasers can also be viewed as spin-amplifiers, since high circular polarization in the output can be achieved even with nearly spin-unpolarized injection [2,3]. In the present work, we study chirp in spin-lasers and suggest new modulation schemes to improve their performance. Supported by NSF-ECCS, U.S. ONR, AFOSR-DCT, and NSF-NEB 2020. [4pt] [1] M. Holub et al., Phys. Rev. Lett. 98, 146603 (2007); J. Rudolph et al., Appl. Phys. Lett. 87, 241117 (2005). [0pt] [2] J. Lee, W. Falls, R. Oszwadowski, and I. Zuti'c, Appl. Phys. Lett. 97, 041116 (2010).[0pt] [3] C. Gøthgen, R. Oszwadowski, A. Petrou, and I. Zuti'c, Appl. Phys. Lett. 93, 042513 (2008).[0pt] [4] G. Boeris, J. Lee, K. V'yborn'y, and I. Zuti'c, preprint (2011).

  20. Energy-Level Alignment in the Adsorption of Phosphonyl Reagents on Gamma-Al2O3

    DTIC Science & Technology

    2008-01-01

    Leszczynski , J. Phys. Chem. B 108 (2004) 5294. [6] A. Michalkova, Y. Paukku, D. Majumdar, J. Leszczynksi, Chem. Phys. Lett. 438 (2007) 72. [7] G...2001) 77. [40] A. Kaczmarek, L. Gorb, A.J. Sadlej, J. Leszczynski , J. Struct. Chem. 15 (2004) 517. [41] V.M. Mamaev, E.V. Zernova, A.V. Prisyazhnyuk

  1. Role of Delocalized Charges in the Pyroelectric Effect

    DTIC Science & Technology

    2006-01-01

    Neth. 27, 1730 2005. 6E. M. de Miguel -Sanz, M. Carrascosa, and L. Arizmendi, Phys. Rev. B 65, 165101 2002. 7L. Arizmendi, E. M. de Miguel -Sanz...and M. Carrascosa, Opt. Lett. 23, 960 1998. 8L. Arizmendi, P. D. Townsend, M. Carrascosa, J. Baquedano, and J. M. Cabrera , J. Phys.: Condens

  2. Anomalous Tropical Ocean Circulation Associated with La Nina Modoki

    DTIC Science & Technology

    2011-12-02

    Behera , S. A. Rao, H. Weng, and T. Yamagata (2007), El Nifio Modoki and its possible telcconncction, J. Geophys. Res., 112, C11007, doi.10.1029...Oscillation, Geophys. Res. Lett., 24, 779-782, doi:10.1029/97GL00689. Weng, H., S. K. Behera , and T. Yamagata (2009), Anomalous winter cli- mate

  3. Strongly Correlated Quantum Fluids: Ultracold Quantum Gases, Quantum Chromodynamic Plasmas and Holographic Duality

    DTIC Science & Technology

    2012-11-19

    waves in asymptotically AdS5 spacetime Phys. Rev. Lett. 106 021601 [313] Hartnoll S A 2009 Lectures on holographic methods for condensed matter physics...Balasubramanian K and McGreevy J 2008 Hot spacetimes for cold atoms J. High Energy Phys. JHEP11(2008)059 [387] Balasubramanian K and McGreevy J 2009 An

  4. Current Interruption and Particle Beam Generation by a Plasma Focus.

    DTIC Science & Technology

    1982-11-30

    34 Fusion Studies Lab Report FSL-68, Urbana, IL 61801 (1981). 816. J. W. Mather, J. P. Carpenter, D. A. Freiwald , K. D. Ware and A. H. Williams, J...Appl. Phys. 44, 4913 (1973). 817. D. A. Freiwald , K. R. Prestwich, G. W. Kuswa and E. H. Beckner, Phys. *Lett. 36A, 297 (1971). 818. J. Verdeyen, private

  5. Dissipative Particle Dynamics at Isoenthalpic Conditions Using Shardlow-Like Splitting Algorithms

    DTIC Science & Technology

    2013-09-01

    Dissipative Particle Dynamics With Energy Conservation. Europhys. Lett. 1997, 40 (2), 141. 2. Español , P. Dissipative Particle Dynamics With Energy...18. Ripoll, M.; Español , P.; Ernst, M. H. Dissipative Particle Dynamics with Energy Conservation: Heat Conduction. Int. J. Mod. Phys. C 1998, 9 (8

  6. Crystal-structure prediction via the Floppy-Box Monte Carlo algorithm: Method and application to hard (non)convex particles

    NASA Astrophysics Data System (ADS)

    de Graaf, Joost; Filion, Laura; Marechal, Matthieu; van Roij, René; Dijkstra, Marjolein

    2012-12-01

    In this paper, we describe the way to set up the floppy-box Monte Carlo (FBMC) method [L. Filion, M. Marechal, B. van Oorschot, D. Pelt, F. Smallenburg, and M. Dijkstra, Phys. Rev. Lett. 103, 188302 (2009), 10.1103/PhysRevLett.103.188302] to predict crystal-structure candidates for colloidal particles. The algorithm is explained in detail to ensure that it can be straightforwardly implemented on the basis of this text. The handling of hard-particle interactions in the FBMC algorithm is given special attention, as (soft) short-range and semi-long-range interactions can be treated in an analogous way. We also discuss two types of algorithms for checking for overlaps between polyhedra, the method of separating axes and a triangular-tessellation based technique. These can be combined with the FBMC method to enable crystal-structure prediction for systems composed of highly shape-anisotropic particles. Moreover, we present the results for the dense crystal structures predicted using the FBMC method for 159 (non)convex faceted particles, on which the findings in [J. de Graaf, R. van Roij, and M. Dijkstra, Phys. Rev. Lett. 107, 155501 (2011), 10.1103/PhysRevLett.107.155501] were based. Finally, we comment on the process of crystal-structure prediction itself and the choices that can be made in these simulations.

  7. Current correlations in an interacting Cooper-pair beam splitter

    NASA Astrophysics Data System (ADS)

    Rech, J.; Chevallier, D.; Jonckheere, T.; Martin, T.

    2012-01-01

    We propose an approach allowing the computation of currents and their correlations in interacting multiterminal mesoscopic systems involving quantum dots coupled to normal and/or superconducting leads. The formalism relies on the expression of branching currents and noise crossed correlations in terms of one- and two-particle Green's functions for the dots electrons, which are then evaluated self-consistently within a conserving approximation. We then apply this to the Cooper-pair beam-splitter setup recently proposed [L. Hofstetter , Nature (London)NATUAS0028-083610.1038/nature08432 461, 960 (2009); Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.107.136801 107, 136801 (2011); L. G. Herrmann , Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.104.026801 104, 026801 (2010)], which we model as a double quantum dot with weak interactions, connected to a superconducting lead and two normal ones. Our method not only enables us to take into account a local repulsive interaction on the dots, but also to study its competition with the direct tunneling between dots. Our results suggest that even a weak Coulomb repulsion tends to favor positive current cross correlations in the antisymmetric regime (where the dots have opposite energies with respect to the superconducting chemical potential).

  8. Atmospheric neutrinos as a probe of CPT violation

    NASA Astrophysics Data System (ADS)

    Mehta, Poonam

    2005-06-01

    We show that atmospheric neutrinos, in conjunction with a (currently planned) large mass magnetized iron calorimeter can allow us to both detect the presence of CPT violation(CPTV) and putting bounds on them which compare very favourably with those possible from a future neutrino factory [Based on A. Datta, R. Gandhi, P. Mehta, S.U. Sankar, Phys. Lett. B 597 (2004) 356].

  9. Too Hard to Control: Compromised Pain Anticipation and Modulation in Mild Traumatic Brain Injury

    DTIC Science & Technology

    2014-01-07

    functional reorganization in major depression. Neurosci Lett 2012; 520: 204–209. 32 Moeller- Bertram T, Keltner J, Strigo IA. Pain and post traumatic stress...functional brain response during anticipation and processing of heat pain. Arch Gen Psychiatry 2008; 65: 1275–1284. 35 Moeller- Bertram T, Keltner J, Strigo

  10. Closed-Cycle Rare-Gas Electrical-Discharge Laser

    DTIC Science & Technology

    1977-04-01

    Shtyrkov and E. V. Subbes, "Characteristics of Pulsed Laser Action in Helium-Neon and Helium-Argon Mixtures," Optics and Spectroscopy 21, 143 (August 1966...34Etude du Deplacement des Raies Laser Infrarouges du Xenon sous l’Influence de la Pression," Phys. Lett. 33A, 398 (November 1970). 89. L. A. Newman

  11. Laser Induced EMP (Electromagnetic Pulse) at 10.6 Microns

    DTIC Science & Technology

    1987-05-01

    they are returned to the target by the potential barrier ( Barkhausen and Kurz, 1920), radiation is also produced by the oscillations of the position...34Self-Focusing of 10.6 um Radiation in an Underdense Plasma," Phys. Rev. Lett. 45, 1260 (1980). Barkhausen , V. H. and Kurz, K., "Die KUlrzesten mit

  12. Direct observation of Barkhausen avalanche in Co thin films.

    PubMed

    Kim, Dong-Hyun; Choe, Sug-Bong; Shin, Sung-Chul

    2003-02-28

    We report direct full-field magneto-optical observations of Barkhausen avalanches in Co polycrystalline thin films at criticality. We provide experimental evidence for the validity of a phenomenological model of the Barkhausen avalanche originally proposed by Cizeau, Zapperi, Durin, and Stanley [Phys. Rev. Lett. 79, 4669 (1997)

  13. The Oral Referential Communication Skills of Hearing-Impaired Children

    ERIC Educational Resources Information Center

    Lloyd, Julian; Lieven, Elena; Arnold, Paul

    2005-01-01

    This paper focuses on the oral referential communication skills of hearing-impaired (HI) children. A task based on that used with language impaired children by Leinonen and Letts (1997) was used to assess the speaking and listening skills of 20 HI children (mean age=10;2 years; mean better ear average hearing loss=88.85 dBHL). Their performance…

  14. The Concept of ’Doping’ of Conducting Polymers. The Role of Reduction Potentials.

    DTIC Science & Technology

    1984-07-01

    containing many carbonyl and other groups ( Pochan et al. 1980; Pochan et al. 1981). However, studies have now shown that when gaseous oxygen is bubbled...and MacDiarmid, A. G. 1980, J. Chem. Phys. 73, 946-957. Pochan , J. M., Gibson, H. W. and Bailey, F. C. 1980 J. Polym. Sci., Polym. Lett Ed. 18, 447-451

  15. Studies of Optical Wave Front Conjugation and Imaging Properties of Nematic Liquid Crystal Films.

    DTIC Science & Technology

    1986-06-01

    AFOSR84O375). Y. R. Shen’s research is supported by a National 4. See. for example, M. Tobias , International Handbook of Liquid Crvstal Science Foundation...vol. A27, pp. 1968-1976,1983;see tal above the I reedericksz transition," AppL. Phys. Lett., vol. 37, also I. P. Battra, R. II. I.nns, and 1). Pohl

  16. Synthesis of Targeted Drugs for Treating Breast Cancer

    DTIC Science & Technology

    2005-04-01

    Subtilisin from B. subtilis 1988-1990 M.S. in Biochemistry, Seoul National University, Seoul, Korea Research Advisor: Professor Chul-Hak Yang Research...Kyoung Lee, Ikuro Abe and Glenn D. Prestwich, " Purification of Pig and Rat Liver Squalene Epoxidase by Affinity Chromatography" Bioorg. Med. Chem. Lett

  17. Charging time for dust grain on surface exposed to plasma

    SciTech Connect

    Sheridan, T. E.

    2013-04-14

    We consider the charging of a dust grain sitting on a surface exposed to plasma. The stochastic model of Sheridan and Hayes [Appl. Phys. Lett. 98, 091501 (2011)] is solved analytically for the charging time, which is found to be directly proportional to the square root of the electron temperature and inversely proportional to both the grain radius and plasma density.

  18. Collaborative Research and Development. Delivery Order 0006: Transmission Electron Microscope Image Modeling and Semiconductor Heterointerface Characterization

    DTIC Science & Technology

    2006-09-01

    J. Harper, M. Weimer, C. -H. Lin, and S. S. Pei, Phys. Rev. Lett. 85, 4562 (2000) and references therein. 27. J. L. Rouviere and N. Bonnet, Inst...Phys. Conf. Ser. 134, 11 (1993). 28. J. F. Aebersold, P. A. Stadelman, and J. L. Rouviere , Ultramicroscopy 62, 171 (1996). 29. P. Trebbia

  19. Comment on 'Quantum teleportation of an arbitrary two-qubit state and its relation to multipartite entanglement'

    SciTech Connect

    Deng Fuguo

    2005-09-15

    The multipartite state in the Rigolin's protocol [Phys. Rev. A 71, 032303 (2005)] for teleporting an arbitrary two-qubit state is just a product state of N Einstein-Podolsky-Rosen pairs in essence, not a genuine multipartite entangled state, and this protocol in principle is equivalent to the Yang-Guo protocol [Chin. Phys. Lett. 17, 162 (2000)].

  20. Multi-stack InAs/InGaAs Sub-monolayer Quantum Dots Infrared Photodetectors

    DTIC Science & Technology

    2013-01-01

    Stevenson, A. J. Shields, C. J. Lobo, K. Cooper, N. S. Beattie, D. A. Ritchie, and M. Pepper , Science 295, 102 (2002). 7M. Jung, K. Hirakawa, Y. Kawaguchi...S. Komiyama, S. Ishida, and Y. Arakawa, Appl. Phys. Lett. 86, 033106 (2005). 8P. B. Joyce and T. J. Krzyzewski, G. R. Bell , B. A. Joyce, and T. S

  1. Comparing Three Jet Rates with and without Hadronic Rindler Horizon

    NASA Astrophysics Data System (ADS)

    Ghaffary, Tooraj

    2017-03-01

    Recently, some researchers, (Sepehri and Shoorvazi Chin. Phys. Lett. 30(2), 021301, [2013]), have considered the effect of Rindler horizon on three jet rate. This paper confirms their results and by comparing usual models with this new model for different energies, shows that regarding Rindler horizon gives us the results which more close to experimental data respect to usual models.

  2. Drude Conductivity of Dirac Fermions in Graphene

    DTIC Science & Technology

    2010-01-01

    value 2 Fv eD n when electron- electron interactions are neglected, with 61.1 10 /Fv m s  being the Fermi velocity 2 and |n| the carrier density... paradox in graphene. Nat Phys 2, 620-625 (2006). 4. Mak, K. F. et al. Measurement of the Optical Conductivity of Graphene. Phys Rev Lett 101, 196405

  3. Mapping Nanoscale Absorption of Femtosecond Laser Pulses Using Plasma Explosion Imaging

    DTIC Science & Technology

    2014-08-06

    Libby, S. B.; et al. Observation and Control of Shock Waves in Indivi- dual Nanoplasmas . Phys. Rev. Lett. 2014, 112, 115004. 17. Zhang, X.; Smith, K. a...Laser Light. Phys. Plasmas 2005, 12, 056703. 24. Lezius, M.; Dobosz, S. Hot Nanoplasmas from Intense Laser Irradiation of Argon Clusters. J. Phys. B

  4. Electronic and Chemical Structure of III-V/Metal amd Si/Metal Interfaces

    DTIC Science & Technology

    1987-10-01

    of EF energies observed ncr the good agreement with classical barrier predictions. C The GaP band gap is the largest for a conventional, binary IIl-V...Phys. C. (Solid State Phys.) 15, 5887 (9183). 19. J. Massies, J. Chaplart, M. Laviron, and N. T. Linh, Appl. Phys. Lett. 38, 693 (1981). Centered Figutr

  5. Progress towards quantum-enhanced interferometry with harmonically trapped quantum matter-wave bright solitons

    NASA Astrophysics Data System (ADS)

    Gertjerenken, Bettina; Wiles, Timothy P.; Weiss, Christoph

    2016-11-01

    We model the dynamics of attractively interacting ultracold bosonic atoms in a quasi-one-dimensional wave guide with additional harmonic trapping. Initially, we prepare the system in its ground state and then shift the zero of the harmonic trap and switch on an additional narrow scattering potential near the center of the trap. After colliding with the barrier twice, we propose to measure the number of atoms opposite the initial condition. Quantum-enhanced interferometry with quantum bright solitons allows us to predict detection of an offset of the scattering potential with considerably increased precision as compared to single-particle experiments. In a future experimental realization this might lead to measurement of weak forces caused, for example, by small horizontal gradients in the gravitational potential—with a resolution of several micrometers given essentially by the size of the solitons. Our numerical simulations are based on the rigorously proved effective potential approach developed in previous papers [Phys. Rev. Lett. 102, 010403 (2009), 10.1103/PhysRevLett.102.010403 and Phys. Rev. Lett. 103, 210402 (2009), 10.1103/PhysRevLett.103.210402]. We choose our parameters such that the prerequisite of the proof (that the solitons cannot break apart, for energetic reasons) is always fulfilled, thus exploring a parameter regime inaccessible to the mean-field description via the Gross-Pitaevskii equation due to Schrödinger-cat states occurring in the many-particle quantum dynamics.

  6. Dielectric and Room Temperature Tunable Properties of Mg-Doped Ba(0.96)Ca(0.04)Ti(0.84)Zr(0.16)O(3) Thin Films on Pt/MgO

    DTIC Science & Technology

    2003-04-03

    film on MgO. In addition, JCPDS based analysis show peaks corresponding to Pt30 4 and (100) MgO. Figure 3 shows the XRD pattern of the Mg-doped BCTZ...Appl. Phys. Lett., 78, 3517 (2001). 9. Powder Diffraction File (International Center for Diffraction Data, Swarthmore, PA, 1995) JCPDS card 36-19. 10

  7. Conserved Quantities in the Generalized Heisenberg Magnet (ghm) Model

    NASA Astrophysics Data System (ADS)

    Mushahid, N.; Hassan, M.; Saleem, U.

    2013-03-01

    We study the conserved quantities of the generalized Heisenberg magnet (GHM) model. We derive the nonlocal conserved quantities of the model using the iterative procedure of Brezin et al. [Phys. Lett. B82, 442 (1979).] We show that the nonlocal conserved quantities Poisson commute with local conserved quantities of the model.

  8. An explanation of the differences in diffusivity of the components of the metallic glass Pd43Cu27Ni10P20

    NASA Astrophysics Data System (ADS)

    Ngai, K. L.; Capaccioli, S.

    2013-03-01

    Bartsch et al. [Phys. Rev. Lett. 104, 195901 (2010), 10.1103/PhysRevLett.104.195901] reported measurements of the diffusivities of different components of the multi-component bulk metallic glass Pd43Cu27Ni10P20. The diffusion of the largest Pd and the smallest P was found to be drastically different. The Stokes-Einstein relation breaks down when considering the P constituent atom, while the relation is obeyed by the Pd atom over 14 orders of magnitude of change in Pd diffusivity. This difference in behavior of Pd and P poses a problem challenging for explanation. With the assist of a recent finding in metallic glasses that the β-relaxation and the diffusion of the smallest component are closely related processes by Yu et al. [Phys. Rev. Lett. 109, 095508 (2012), 10.1103/PhysRevLett.109.095508], we use the Coupling Model to explain the observed difference between P and Pd quantitatively. The same model also explains the correlation between property of the β-relaxation with fragility found in the family of (CexLa1-x)68Al10Cu20Co2 with 0 ≤ x ≤ 1.

  9. Coherence Effects in Light Propagation in Scattering and in Spectroscopy

    DTIC Science & Technology

    2005-12-01

    Gaussian Schell - model Beams Propagating in Atmospheric Turbulence", Opt. Lett. 28...generated by an electromagnetic Gaussian Schell - model source which propagates through atmospheric turbulence tends to its value at the source plane with...polarization on propagation . We illustrate the results by a numerical example relating to an electromagnetic Gaussian Schell - model beam. 17 51. H.

  10. Microwave Induced Reaction of H-Dimethylphosphonate With Styrene Oxide

    DTIC Science & Technology

    2002-01-01

    Chem. 587, 160, 1999; 3. A. G. Rowley in “Organophosphorus Reagetns in Organic Synthesis ’, J. I. G. Cadogan, Academic Press, NewYork (1979), p.306...and M. Sekine, Tetrahedron Lett. 1998,39, 7123,; (b) Y. Hayakawa in “Comprehensive Organic Synthesis ”, Vol. 5, B. M. Trost and I. Flemming (eds

  11. Electronic Structure of Solids and Their Surfaces and Interfaces.

    DTIC Science & Technology

    1981-06-30

    adjustments to the -seudopotentials, but it h-sn’t worked weJ . When nonlocal pseudopotf!ntials were used, as in the calculqtio-s of (’helikowshy...Study of H Chemisorption on NiO Surfaces", Phys. Rev. Lett. 40, 347 -350 (1978). 5. A. B. Kunz and D. L. Klein, "Unrestricted Hartree-Fock Approach to

  12. Structure of the solution of the time-dependent Schrödinger equation, universal existence of the cyclic quantum evolution, and geometric phases

    NASA Astrophysics Data System (ADS)

    Wu, Lian-Ao

    1994-12-01

    It is shown that the cyclic evolution posed by Aharonov and Anandan [Phys. Rev. Lett. 58, 1593 (1987)] universally exists in any quantum system: cyclic evolution occurs for special initial wave functions, whatever the concrete form of the Hamiltonian. The above results are illustrated and some specific geometric phases are given.

  13. Turning intractable counting into sampling: Computing the configurational entropy of three-dimensional jammed packings

    NASA Astrophysics Data System (ADS)

    Martiniani, Stefano; Schrenk, K. Julian; Stevenson, Jacob D.; Wales, David J.; Frenkel, Daan

    2016-01-01

    We present a numerical calculation of the total number of disordered jammed configurations Ω of N repulsive, three-dimensional spheres in a fixed volume V . To make these calculations tractable, we increase the computational efficiency of the approach of Xu et al. [Phys. Rev. Lett. 106, 245502 (2011), 10.1103/PhysRevLett.106.245502] and Asenjo et al. [Phys. Rev. Lett. 112, 098002 (2014), 10.1103/PhysRevLett.112.098002] and we extend the method to allow computation of the configurational entropy as a function of pressure. The approach that we use computes the configurational entropy by sampling the absolute volume of basins of attraction of the stable packings in the potential energy landscape. We find a surprisingly strong correlation between the pressure of a configuration and the volume of its basin of attraction in the potential energy landscape. This relation is well described by a power law. Our methodology to compute the number of minima in the potential energy landscape should be applicable to a wide range of other enumeration problems in statistical physics, string theory, cosmology, and machine learning that aim to find the distribution of the extrema of a scalar cost function that depends on many degrees of freedom.

  14. High Performance Seed Based Optical Computing.

    DTIC Science & Technology

    1998-05-01

    fibers in ’ retroreflector systems’ [42]. Circular VCSELs have arbitrary polarization, thus tend to preclude the use of polarization components, and...doped silica deposited by hollow cathode PECVD’, Electron. Lett.. 1996, 32, pp. 1198-1199 6 LOVE, J.D.: ’Application of low-loss criterion to optical

  15. Basic Studies in Plasma Physics

    DTIC Science & Technology

    2013-01-31

    External Stresses, (with C. Laberge and P. Fratzl), Phys. Rev. Lett., 75:4448-4451, 1995. [15] Shock Profiles for the Asymmetric Simple Exclusoin...Postdoctoral Fellow, Yale University, 1956-57 POSITIONS: Stevens Institute of Technology, Assistant Professor of Physics, 1957-59 Belfer Graduate

  16. Warped Products and Yang-Mills Equations on Noncommutative Spaces

    NASA Astrophysics Data System (ADS)

    Zampini, Alessandro

    2015-02-01

    This paper presents a non-self-dual solution of the Yang-Mills equations on a noncommutative version of the classical , so generalizing the classical meron solution first introduced by de Alfaro et al. (Phys Lett B 65:163-166, 1976). The basic tool for that is a generalization to noncommutative spaces of the classical notion of warped products between metric spaces.

  17. Nanoparticle Controlled Soft Complex Structures with Topological Defects

    DTIC Science & Technology

    2013-10-01

    Condensed matter analogues of cosmology 25, 404201-1-404201-10, (2013); 7) Appl. Opt. 52, E47-E52 (2013); 8) Appl. Phys. Lett. 103, 143116 (2013...analogy with cosmology and magnetism, J. Phys.: Condens. Matter, Special Issue on Condensed matter analogues of cosmology 25, 404201, (2013). [24] A

  18. Experimental observation of a multirhythmic pattern in chains of Rossler circuits

    NASA Astrophysics Data System (ADS)

    Liu, Wei-Qing; Deng, Jing-Fa; Xiao, Jing-Hua

    2012-12-01

    The influence of parameter mismatches on multirhythmic patterns in chains of coupled Rossler circuits are explored experimentally. The parameter mismatches in coupled chaotic oscillators are found to help form a kind of multirhythmic pattern as reported in chains of biological coupled oscillators [Phys. Rev. Lett. 92 228102]. Moreover, a new type of multirhythmic pattern based on the envelope of time series is observed.

  19. Origin of Second-Harmonic Generation Enhancement in Optical Split-Ring Resonators

    DTIC Science & Technology

    2012-05-15

    PHYSICAL REVIEW B 85, 201403(R) (2012) 12M. W. Klein, M. Wegener , N. Feth, and S. Linden, Opt. Express 15, 5238 (2006). 13M. McMahon, R. Lopez, R. Haglund...Enkrich, M. Wegener , and S. Linden, Science 313, 502 (2006). 20F. B. P. Niesler, N. Feth, S. Linden, and M. Wegener , Opt. Lett. 36, 1533 (2011). 21R. Ruppin

  20. Fundamental Research to Support Direct Phase-Resolved Simulation of Nonlinear Ocean Wavefield Evolution

    DTIC Science & Technology

    2013-09-30

    schrodinger equation for application to deep water waves. Proc. R. Soc. Lond. A, 369:pp.105 – 14. 2. Falcon, E., Laroche, C. and Fauve, S. 2007...Observation of gravity-capillary wave turbulence. Phy. Rev. Lett. 98, 94503. 3. Trulsen,K.and Dysthe,K.B. 1996 A modified nonlinear Schrodinger equation for

  1. Fundamental Research to Support Direct Phase-Resolved Simulation of Nonlinear Ocean Wavefield Evolution

    DTIC Science & Technology

    2013-11-18

    capability to realistic ocean environments. REFERENCES 1. Dysthe, K.B. 1979 Note on a modification to the nonlinear schrodinger equation for...wave turbulence. Phy. Rev. Lett. 98, 94503. 3. Trulsen,K.and Dysthe,K.B. 1996 A modified nonlinear Schrodinger equation for broader bandwidth

  2. Geosynchronous Imaging of the Earth’s Ionosphere: Development Phase

    DTIC Science & Technology

    2003-09-30

    REFERENCES Kelley, M.C., J.J. Makela, B.M. Ledvina , and P.M. Kintner, Observations of equatorial spread-F from Haleakala, Hawaii, Geophys. Res...Kelley, M.C., J.J. Makela, B.M. Ledvina , and P.M. Kintner, Observations of equatorial spread-F from Haleakala, Hawaii, Geophys. Res. Lett., 29(20

  3. Polymeric Materials

    DTIC Science & Technology

    2009-06-01

    Tunable and white light- emitting diodes of monolayer fluorinated benzoxazole graft copolymers”, Appl. Phys. Lett., 2004, 84(10), 1656. J.-B. Baek...phenoxybenzoic acids onto carbon nanotubes via electrophilic substitution reaction in polyphosphoric acid". Polymer Preprints, 46, 216-217 (2005). R. B

  4. Effects of Solvation on One- and Two-Photon Spectra of Coumarin Derivatives: A Time-Dependent Density Functional Theory Study (Postprint)

    DTIC Science & Technology

    2007-01-01

    2003. 15 A. Barik, S. Nath, and H. Pal, J. Chem. Phys. 119, 10202 2003. 16 A. Fisher, C. Cremer , and E. H. K. Stelzer, Appl. Opt. 34, 1989 1995...23 L. R. Martins and M. S. Skaf, Chem. Phys. Lett. 370, 683 2003. 24 R. J. Cave, K. Burke, and E. W. Castner, Jr., J. Phys. Chem. A 106, 9294 2002

  5. Topological lifetimes of polydisperse colloidal hard spheres at a wall.

    PubMed

    Dullens, Roel P A; Kegel, Willem K

    2005-01-01

    Confocal scanning laser microscopy was used to study the behavior of dense suspensions of model colloidal hard spheres at a single wall. Due to the slight polydispersity, our system shows a reentrant melting transition at high densities involving a hexatic structure [Phys. Rev. Lett 92, 195702 (2004)

  6. The Production and Study of Antiprotons and Cold Antihydrogen

    DTIC Science & Technology

    2010-11-10

    DATE {DD-MM-YYYYI 12. REPORT TYPE 3. DATES COVERED (From - To) lONOV 2010 Final 15JAN 2007 to 31MAY 2010 4 . TITLE AND SUBTITLE Sa. CONTRACT NUMBER...113002 (2007). [9] R. V. Roijen, J. J. Berkhout , S. Jaakola, and J. T. M. Walraven, Phys. Rev. Lett. 61, 931 (1988). [10] C. L. Cesar, D. G. Fried, T. C

  7. Measuring orbital angular momentum superpositions of light by mode transformation.

    PubMed

    Berkhout, Gregorius C G; Lavery, Martin P J; Padgett, Miles J; Beijersbergen, Marco W

    2011-05-15

    We recently reported on a method for measuring orbital angular momentum (OAM) states of light based on the transformation of helically phased beams to tilted plane waves [Phys. Rev. Lett.105, 153601 (2010)]. Here we consider the performance of such a system for superpositions of OAM states by measuring the modal content of noninteger OAM states and beams produced by a Heaviside phase plate.

  8. Guanidino Groups Greatly Enhance the Action of Antimicrobial Peptidomimetics Against Bacterial Cytoplasmic Membranes

    DTIC Science & Technology

    2014-05-28

    Chen, R.J. Doerksen, J. Kaplan, P.J. Carroll , M.L. Klein, W.F. DeGrado, De novo design of biomimetic antimicrobial polymers, Proc. Natl. Acad. Sci. U. S...J.J. Diaz-Mochon, L. Bialy, M. Bradley , Full orthogonality between Dde and Fmoc: the direct synthesis of PNA–peptide conjugates, Org. Lett. 6 (2004

  9. Presynaptic Modulation of the Hippocampal Mossy Fiber Synapse

    DTIC Science & Technology

    1991-10-07

    al., 1987). In addition, the nootropic (cognitive enhancing) drug bifemaline has been shown to increase the magnitude of MF LTP (Satoh et al., 1988...Different susceptibilities of long-term potentiations in CA3 and CAl regions of guinea pig hippocampal slices to nootropic drugs. Neurosci. Lett., 1988; 93

  10. Public Data Set: High Confinement Mode and Edge Localized Mode Characteristics in a Near-Unity Aspect Ratio Tokamak

    SciTech Connect

    Thome, Kathreen E.; Bongard, Michael W.; Barr, Jayson L.; Bodner, Grant M.; Burke, Marcus G.; Fonck, Raymond J.; Kriete, David M.; Perry, Justin M.; Schlossberg, David J.

    2016-04-27

    This data set contains openly-documented, machine readable digital research data corresponding to figures published in K.E. Thome et al., 'High Confinement Mode and Edge Localized Mode Characteristics in a Near-Unity Aspect Ratio Tokamak,' Phys. Rev. Lett. 116, 175001 (2016).

  11. AdS collapse of a scalar field in higher dimensions

    SciTech Connect

    Jalmuzna, Joanna; Rostworowski, Andrzej; Bizon, Piotr

    2011-10-15

    We show that the weakly turbulent instability of anti-de Sitter space, recently found in P. Bizon and A. Rostworowski, Phys. Rev. Lett. 107, 031102 (2011) for 3+1-dimensional spherically symmetric Einstein-massless-scalar field equations with negative cosmological constant, is present in all dimensions d+1 for d{>=}3.

  12. Local Pairing and Antiferromagnetism in High-T(c) Superconductors

    DTIC Science & Technology

    1989-09-01

    G. Shirane, Y. Endoh, R. J. Birgeneau, M. A. Kastner, Y. Hidaka, M. Oda, M. Suzuki and T. Murakami, Phys. Rev. Lett. 59, 1613 (1987); J. M. Tranquada ...T Update 3(9), 7 (1989). K J. M. Tranquada , S. M. Heald, A. R. Moodenbaugh, G. Liang and M. Croft, Nature 337, 720 (1989). J. M. Tranquada , S. M

  13. Stochastic Schroedinger equations with general complex Gaussian noises

    SciTech Connect

    Bassi, Angelo

    2003-06-01

    Within the framework of non-Markovian stochastic Schroedinger equations, we generalize the results of [W. T. Strunz, Phys. Lett. A 224, 25 (1996)] to the case of general complex Gaussian noises; we analyze the two important cases of purely real and purely imaginary stochastic processes.

  14. New Techniques in Optical Communications and Signal Processing

    DTIC Science & Technology

    1991-12-01

    Pessot and G. Mourou, IEEE .Iourn. ()uant. Flec., vol QE-24, pp. 401-403, 1987. r20 ] J. D. Kafka and T. Baer, Opt. Lett., vol. 12, pp. 401-403, 1987...IEEE, vol. 53, no. 5, p. 522, 1965. [13] K. W. Boer, " Franz -Keldysh effect for appreciable deflection of light beams," Phyvs. Stat. Solidi B, vol. 8, no

  15. Nonlinear Wave Propagation

    DTIC Science & Technology

    1989-05-22

    1977. 21. Asymptotic Solutions of the Korteweg-deVries Equation, M.J. Ablowitz and H. Segur, Studies in Applied Math., 57, pp. 13-44, 1977. ?2. Exact ... Linearization of a Painleve Transcendent, M.J. Ablowitz and H. Segur, Phys. Rev. Lett., Vol. 38, No. 20, p. 1103, 1977. 23. Solitons and Rational

  16. Terahertz Microscope

    DTIC Science & Technology

    2010-05-01

    Science, 2009. 9. Reference: 1. Ferguson , B., Zhang, X.-C. Materials for terahertz science and technology, Nature Materials 1, 26 - 33 (01 Sep 2002...interaction, Phys. Rev. Lett., 71, 2725-2728 (1993). 21. Woolard D.L., Brown R., Pepper M., Kemp M., Terahertz frequency sensing and imaging: a time

  17. Quantum Phenomena in Semiconductor Structures

    DTIC Science & Technology

    1988-12-13

    oscillated with magnetic flux - the Aharonov - Bohm effect - and was investigated in detail. Evidence of interference was also found between electrons...Transistors", T P C Judd, M Pepper and G Hill, AppI. Phys. Lett. U3, 54, 1988. 5. ’The Aharonov - Bohm Effect in Electrostatically Defined Heterojunction

  18. Scaling theory of depinning in the Sneppen model

    SciTech Connect

    Maslov, S.; Paczuski, M. Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11790 The Isaac Newton Institute for Mathematical Sciences, 20 Clarkson Road, Cambridge CB4 0EH )

    1994-08-01

    We develop a scaling theory for the critical depinning behavior of the Sneppen interface model [Phys. Rev. Lett. [bold 69], 3539 (1992)]. This theory is based on a gap'' equation that describes the self-organization process to a critical state of the depinning transition. All of the critical exponents can be expressed in terms of two independent exponents, [nu][sub [parallel

  19. Experimental Evidence of Dipolar Interaction in Bilayer Nanocomposite Magnets

    DTIC Science & Technology

    2010-11-25

    105, 023912 (2009) 7. D.T. Margulies, M.E. Schabes , W.Mc. Chesney, E.E. Fullerton, Appl. Phys. Lett. 80, 91 (2002) 8. S.S.P. Parkin, D. Mauri, Phys. Rev. B 44, 7131 (1991) 9. S.T. Chui, J. Appl. Phys. 85, 4397 (1999)

  20. Improved Analysis of GW150914 Using a Fully Spin-Precessing Waveform Model

    NASA Astrophysics Data System (ADS)

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A.; Billingsley, G.; Birch, J.; Birney, R.; Birnholtz, O.; Biscans, S.; Bisht, A.; Bitossi, M.; Biwer, C.; Bizouard, M. A.; Blackburn, J. K.; Blair, C. D.; Blair, D. G.; Blair, R. M.; Bloemen, S.; Bock, O.; Boer, M.; Bogaert, G.; Bogan, C.; Bohe, A.; Bond, C.; Bondu, F.; Bonnand, R.; Boom, B. A.; Bork, R.; Boschi, V.; Bose, S.; Bouffanais, Y.; Bozzi, A.; Bradaschia, C.; Brady, P. R.; Braginsky, V. B.; Branchesi, M.; Brau, J. E.; Briant, T.; Brillet, A.; Brinkmann, M.; Brisson, V.; Brockill, P.; Broida, J. E.; Brooks, A. F.; Brown, D. A.; Brown, D. D.; Brown, N. M.; Brunett, S.; Buchanan, C. C.; Buikema, A.; Bulik, T.; Bulten, H. J.; Buonanno, A.; Buskulic, D.; Buy, C.; Byer, R. L.; Cabero, M.; Cadonati, L.; Cagnoli, G.; Cahillane, C.; Calderón Bustillo, J.; Callister, T.; Calloni, E.; Camp, J. B.; Cannon, K. C.; Cao, J.; Capano, C. D.; Capocasa, E.; Carbognani, F.; Caride, S.; Casanueva Diaz, C.; Casentini, J.; Caudill, S.; Cavaglià, M.; Cavalier, F.; Cavalieri, R.; Cella, G.; Cepeda, C. B.; Cerboni Baiardi, L.; Cerretani, G.; Cesarini, E.; Chamberlin, S. J.; Chan, M.; Chao, S.; Charlton, P.; Chassande-Mottin, E.; Cheeseboro, B. D.; Chen, H. Y.; Chen, Y.; Cheng, C.; Chincarini, A.; Chiummo, A.; Cho, H. S.; Cho, M.; Chow, J. H.; Christensen, N.; Chu, Q.; Chua, S.; Chung, S.; Ciani, G.; Clara, F.; Clark, J. A.; Cleva, F.; Coccia, E.; Cohadon, P.-F.; Colla, A.; Collette, C. G.; Cominsky, L.; Constancio, M.; Conte, A.; Conti, L.; Cook, D.; Corbitt, T. R.; Cornish, N.; Corsi, A.; Cortese, S.; Costa, C. A.; Coughlin, M. W.; Coughlin, S. B.; Coulon, J.-P.; Countryman, S. T.; Couvares, P.; Cowan, E. E.; Coward, D. M.; Cowart, M. J.; Coyne, D. C.; Coyne, R.; Craig, K.; Creighton, J. D. E.; Cripe, J.; Crowder, S. G.; Cumming, A.; Cunningham, L.; Cuoco, E.; Dal Canton, T.; Danilishin, S. 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G.; Ju, L.; K, Haris; Kalaghatgi, C. V.; Kalogera, V.; Kandhasamy, S.; Kang, G.; Kanner, J. B.; Kapadia, S. J.; Karki, S.; Karvinen, K. S.; Kasprzack, M.; Katsavounidis, E.; Katzman, W.; Kaufer, S.; Kaur, T.; Kawabe, K.; Kéfélian, F.; Kehl, M. S.; Keitel, D.; Kelley, D. B.; Kells, W.; Kennedy, R.; Key, J. S.; Khalili, F. Y.; Khan, I.; Khan, S.; Khan, Z.; Khazanov, E. A.; Kijbunchoo, N.; Kim, Chi-Woong; Kim, Chunglee; Kim, J.; Kim, K.; Kim, N.; Kim, W.; Kim, Y.-M.; Kimbrell, S. J.; King, E. J.; King, P. J.; Kissel, J. S.; Klein, B.; Kleybolte, L.; Klimenko, S.; Koehlenbeck, S. M.; Koley, S.; Kondrashov, V.; Kontos, A.; Korobko, M.; Korth, W. Z.; Kowalska, I.; Kozak, D. B.; Kringel, V.; Królak, A.; Krueger, C.; Kuehn, G.; Kumar, P.; Kumar, R.; Kuo, L.; Kutynia, A.; Lackey, B. D.; Landry, M.; Lange, J.; Lantz, B.; Lasky, P. D.; Laxen, M.; Lazzarini, A.; Lazzaro, C.; Leaci, P.; Leavey, S.; Lebigot, E. O.; Lee, C. H.; Lee, H. K.; Lee, H. M.; Lee, K.; Lenon, A.; Leonardi, M.; Leong, J. R.; Leroy, N.; Letendre, N.; Levin, Y.; Lewis, J. B.; Li, T. G. F.; Libson, A.; Littenberg, T. B.; Lockerbie, N. A.; Lombardi, A. L.; London, L. T.; Lord, J. E.; Lorenzini, M.; Loriette, V.; Lormand, M.; Losurdo, G.; Lough, J. D.; Lousto, C. O.; Lovelace, G.; Lück, H.; Lundgren, A. P.; Lynch, R.; Ma, Y.; Machenschalk, B.; MacInnis, M.; Macleod, D. M.; Magaña-Sandoval, F.; Magaña Zertuche, L.; Magee, R. M.; Majorana, E.; Maksimovic, I.; Malvezzi, V.; Man, N.; Mandic, V.; Mangano, V.; Mansell, G. L.; Manske, M.; Mantovani, M.; Marchesoni, F.; Marion, F.; Márka, S.; Márka, Z.; Markosyan, A. S.; Maros, E.; Martelli, F.; Martellini, L.; Martin, I. W.; Martynov, D. V.; Marx, J. N.; Mason, K.; Masserot, A.; Massinger, T. J.; Masso-Reid, M.; Mastrogiovanni, S.; Matichard, F.; Matone, L.; Mavalvala, N.; Mazumder, N.; McCarthy, R.; McClelland, D. E.; McCormick, S.; McGuire, S. C.; McIntyre, G.; McIver, J.; McManus, D. J.; McRae, T.; McWilliams, S. T.; Meacher, D.; Meadors, G. 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K.; Oberling, J.; Ochsner, E.; O'Dell, J.; Oelker, E.; Ogin, G. H.; Oh, J. J.; Oh, S. H.; Ohme, F.; Oliver, M.; Oppermann, P.; Oram, Richard J.; O'Reilly, B.; O'Shaughnessy, R.; Ottaway, D. J.; Overmier, H.; Owen, B. J.; Pai, A.; Pai, S. A.; Palamos, J. R.; Palashov, O.; Palomba, C.; Pal-Singh, A.; Pan, H.; Pankow, C.; Pannarale, F.; Pant, B. C.; Paoletti, F.; Paoli, A.; Papa, M. A.; Paris, H. R.; Parker, W.; Pascucci, D.; Pasqualetti, A.; Passaquieti, R.; Passuello, D.; Patricelli, B.; Patrick, Z.; Pearlstone, B. L.; Pedraza, M.; Pedurand, R.; Pekowsky, L.; Pele, A.; Penn, S.; Perreca, A.; Perri, L. M.; Pfeiffer, H. P.; Phelps, M.; Piccinni, O. J.; Pichot, M.; Piergiovanni, F.; Pierro, V.; Pillant, G.; Pinard, L.; Pinto, I. M.; Pitkin, M.; Poe, M.; Poggiani, R.; Popolizio, P.; Post, A.; Powell, J.; Prasad, J.; Predoi, V.; Prestegard, T.; Price, L. R.; Prijatelj, M.; Principe, M.; Privitera, S.; Prix, R.; Prodi, G. 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S.; Schönbeck, A.; Schreiber, E.; Schuette, D.; Schutz, B. F.; Scott, J.; Scott, S. M.; Sellers, D.; Sengupta, A. S.; Sentenac, D.; Sequino, V.; Sergeev, A.; Setyawati, Y.; Shaddock, D. A.; Shaffer, T.; Shahriar, M. S.; Shaltev, M.; Shapiro, B.; Shawhan, P.; Sheperd, A.; Shoemaker, D. H.; Shoemaker, D. M.; Siellez, K.; Siemens, X.; Sieniawska, M.; Sigg, D.; Silva, A. D.; Singer, A.; Singer, L. P.; Singh, A.; Singh, R.; Singhal, A.; Sintes, A. M.; Slagmolen, B. J. J.; Smith, J. R.; Smith, N. D.; Smith, R. J. E.; Son, E. J.; Sorazu, B.; Sorrentino, F.; Souradeep, T.; Srivastava, A. K.; Staley, A.; Steinke, M.; Steinlechner, J.; Steinlechner, S.; Steinmeyer, D.; Stephens, B. C.; Stevenson, S. P.; Stone, R.; Strain, K. A.; Straniero, N.; Stratta, G.; Strauss, N. A.; Strigin, S.; Sturani, R.; Stuver, A. L.; Summerscales, T. Z.; Sun, L.; Sunil, S.; Sutton, P. J.; Swinkels, B. L.; Szczepańczyk, M. J.; Tacca, M.; Talukder, D.; Tanner, D. B.; Tápai, M.; Tarabrin, S. P.; Taracchini, A.; Taylor, R.; Theeg, T.; Thirugnanasambandam, M. P.; Thomas, E. G.; Thomas, M.; Thomas, P.; Thorne, K. A.; Thorne, K. S.; Thrane, E.; Tiwari, S.; Tiwari, V.; Tokmakov, K. V.; Toland, K.; Tomlinson, C.; Tonelli, M.; Tornasi, Z.; Torres, C. V.; Torrie, C. I.; Töyrä, D.; Travasso, F.; Traylor, G.; Trifirò, D.; Tringali, M. C.; Trozzo, L.; Tse, M.; Turconi, M.; Tuyenbayev, D.; Ugolini, D.; Unnikrishnan, C. S.; Urban, A. L.; Usman, S. A.; Vahlbruch, H.; Vajente, G.; Valdes, G.; Vallisneri, M.; van Bakel, N.; van Beuzekom, M.; van den Brand, J. F. J.; Van Den Broeck, C.; Vander-Hyde, D. C.; van der Schaaf, L.; van der Sluys, M. V.; van Heijningen, J. V.; Vano-Vinuales, A.; van Veggel, A. A.; Vardaro, M.; Vass, S.; Vasúth, M.; Vaulin, R.; Vecchio, A.; Vedovato, G.; Veitch, J.; Veitch, P. J.; Venkateswara, K.; Verkindt, D.; Vetrano, F.; Viceré, A.; Vinciguerra, S.; Vine, D. J.; Vinet, J.-Y.; Vitale, S.; Vo, T.; Vocca, H.; Vorvick, C.; Voss, D. V.; Vousden, W. D.; Vyatchanin, S. P.; Wade, A. R.; Wade, L. E.; Wade, M.; Walker, M.; Wallace, L.; Walsh, S.; Wang, G.; Wang, H.; Wang, M.; Wang, X.; Wang, Y.; Ward, R. L.; Warner, J.; Was, M.; Weaver, B.; Wei, L.-W.; Weinert, M.; Weinstein, A. J.; Weiss, R.; Wen, L.; Weßels, P.; Westphal, T.; Wette, K.; Whelan, J. T.; Whiting, B. F.; Williams, R. D.; Williamson, A. R.; Willis, J. L.; Willke, B.; Wimmer, M. H.; Winkler, W.; Wipf, C. C.; Wittel, H.; Woan, G.; Woehler, J.; Worden, J.; Wright, J. L.; Wu, D. S.; Wu, G.; Yablon, J.; Yam, W.; Yamamoto, H.; Yancey, C. C.; Yu, H.; Yvert, M.; ZadroŻny, A.; Zangrando, L.; Zanolin, M.; Zendri, J.-P.; Zevin, M.; Zhang, L.; Zhang, M.; Zhang, Y.; Zhao, C.; Zhou, M.; Zhou, Z.; Zhu, X. J.; Zucker, M. E.; Zuraw, S. E.; Zweizig, J.; Boyle, M.; Brügmann, B.; Campanelli, M.; Chu, T.; Clark, M.; Haas, R.; Hemberger, D.; Hinder, I.; Kidder, L. E.; Kinsey, M.; Laguna, P.; Ossokine, S.; Pan, Y.; Röver, C.; Scheel, M.; Szilagyi, B.; Teukolsky, S.; Zlochower, Y.; LIGO Scientific Collaboration; Virgo Collaboration

    2016-10-01

    This paper presents updated estimates of source parameters for GW150914, a binary black-hole coalescence event detected by the Laser Interferometer Gravitational-wave Observatory (LIGO) in 2015 [Abbott et al. Phys. Rev. Lett. 116, 061102 (2016).]. Abbott et al. [Phys. Rev. Lett. 116, 241102 (2016).] presented parameter estimation of the source using a 13-dimensional, phenomenological precessing-spin model (precessing IMRPhenom) and an 11-dimensional nonprecessing effective-one-body (EOB) model calibrated to numerical-relativity simulations, which forces spin alignment (nonprecessing EOBNR). Here, we present new results that include a 15-dimensional precessing-spin waveform model (precessing EOBNR) developed within the EOB formalism. We find good agreement with the parameters estimated previously [Abbott et al. Phys. Rev. Lett. 116, 241102 (2016).], and we quote updated component masses of 35-3+5 M⊙ and 3 0-4+3 M⊙ (where errors correspond to 90% symmetric credible intervals). We also present slightly tighter constraints on the dimensionless spin magnitudes of the two black holes, with a primary spin estimate <0.65 and a secondary spin estimate <0.75 at 90% probability. Abbott et al. [Phys. Rev. Lett. 116, 241102 (2016).] estimated the systematic parameter-extraction errors due to waveform-model uncertainty by combining the posterior probability densities of precessing IMRPhenom and nonprecessing EOBNR. Here, we find that the two precessing-spin models are in closer agreement, suggesting that these systematic errors are smaller than previously quoted.

  1. Nanodevice for Imaging Normal Stress Distribution With Application in Sensing Texture and Feel’ by Touching

    DTIC Science & Technology

    2004-12-01

    M.C. Schlamp, A.P. Alivisatos, Light-emitting Diodes made from Cadmium Selenide Nanocrystals and Semiconducting Polymer, Nature, 370, 354-357 (1994...from Cadmium Selenide Nanocrystal, Nature, 389, 699-701 (1997). 11. S.H.M. Persson, L. Olofsson, L. Gunnarsson, Appl. Phys. Lett., 74, 2546 (1999

  2. Assembly of Functional Porous Solids in Complex Hybrid Composites

    DTIC Science & Technology

    2006-05-31

    Baughman, R. H., Iqbal, Z., Cui, C., Khayrullin , I., Dantas, S. O., Marti, J. & Ralchenko, V. G. "Carbon Structures with Three-Dimensional...34 Appl. Phys. Lett. 71, 1616-1618 (1997). 136. Eradat, N., Huang, J. D., Vardeny, Z. V., Zakhidov, A. A., Khayrullin , I., Udod, I. & Baughman, R. H

  3. Growth of Thin Hetero-Epitaxial Layers of Graphite and Diamond on SIC for Carbon Based Electronics

    DTIC Science & Technology

    2010-02-01

    Lett, Vol. 100, p. 0116602. 6. Measurement of Scattering Rate and Minimum Conductivity in Graphene. Y. W. Tan, Y. Zhang, K. Bolotin, Y. Zhao, S. Adam ... E . H. Hwang, S. Das Sarma, H. L. Stormer,. 2007, Phys. Rev., Vol. 99, p. 246803. 7. LEED AND Auger Electron Observations. A.J. Van Bommel, J.E

  4. Laser- and Particle-Beam Chemical Processes on Surfaces. Volume 129

    DTIC Science & Technology

    1989-12-26

    P.M. Whitmore, and K.C. Janda , J. Phys. Chem. 92, 1604 (1988). 5 F.G. Celii, P.M. Whitmore, and K.C. Janda , Chem. Phys. Lett. 138, 257 (1987); T.A...Fueki and S. Tanaka, in Novel Superconductivity , edited by Stuart Wolf and Vladimir Kresin (Plenum Press, New York 1987), p. 855. 10. B.G. Bagley

  5. Enhancing Otto-Mobile Efficiency via Addition of a Quantum Carnot Cycle

    NASA Astrophysics Data System (ADS)

    Opatrný, Tomáš; Scully, Marlan O.

    2003-09-01

    It was shown recently that one can improve the efficiency of the Otto cycle by taking advantage of the internal degrees of freedom of an ideal gas [M. O. Scully, “The Quantum Afterburner”, Phys. Rev. Lett., to be published]. Here we discuss the limiting improvement of the efficiency by considering reversible cycles with both internal and external degrees of freedom.

  6. Development and realization of non-periodic W/Si multilayer mirrors for 5 14 keV X-ray plasma diagnostic

    NASA Astrophysics Data System (ADS)

    Champeaux, J.-Ph.; Troussel, Ph.; Villier, B.; Vidal, V.; Khachroum, T.; Vidal, B.; Krumrey, M.

    2007-11-01

    W/Si aperiodic multilayer mirrors were developed at the Commissariat à l'Energie Atomique (CEA-DIF) in collaboration with the Laboratoire des Matériaux et de Microélectronique de Provence (L2MP). These "super-mirrors" [F. Mezei, Commun. Phys. 2 (1977) 41. [1]; E. Spiller, Appl. Phys. Lett. 20 (1972) 365. [2

  7. Quantum-dot cluster-state computing with encoded qubits

    SciTech Connect

    Weinstein, Yaakov S.; Hellberg, C. Stephen; Levy, Jeremy

    2005-08-15

    A class of architectures is advanced for cluster-state quantum computation using quantum dots. These architectures include using single and multiple dots as logical qubits. Special attention is given to supercoherent qubits introduced by Bacon et al. [Phys. Rev. Lett. 87, 247902 (2001)] for which we discuss the effects of various errors and present a means of error protection.

  8. Electrical Detection of Charge-Current-Induced Spin Polarization Due to Spin-Momentum Locking in Bi2Se3

    DTIC Science & Technology

    2014-01-01

    Robinson2, Y. Liu3, L. Li3 and B. T. Jonker1* Topological insulators exhibit metallic surface states populated by massless Dirac fermions with spin...Superconducting proximity effect and Majorana fermions at the surface of a topological insulator. Phys. Rev. Lett. 100, 096407 (2008). 11. Qi, X-L., Li, R

  9. Frequency Stabilization of a Single Mode Terahertz Quantum Cascade Laser to the Kilohertz Level

    DTIC Science & Technology

    2009-04-27

    line phase-locked quntum cascade laser in the 9.2 µm range,” Opt. Lett. 32, (2007). 14. D. W. Allan, “Statistics of atomic frequency standards...Eur. Micro. Conf. 14th, 248 – 253 (1984). 1. Introduction THz quantum cascade lasers [1] (TQCL) are a fast growing field with many potential

  10. Theory of the Tetragonal-to-Orthorhombic Structural Phase Transition in La2CuO4.

    DTIC Science & Technology

    1987-11-01

    J. G. Bednorz and K. A. Muller, Z. Phys. B j4, 189 (1986). 2. C. W. Chu, P. H. Hor, R. L. Meng, L. Gao, Z. J. Huang and Y. Q. Wang , Phys. Rev. Lett...Chemistry University of2 chester Pennsylvania State University Roches ew York 14627 University Park, Pennsylvania 16802 r. G. Rubloff Dr. Roald

  11. Electronic and Structural Properties of Si10 Cluster

    DTIC Science & Technology

    1990-06-01

    1990). 18. R. Biswas, C. Z. Wang , C. T. Chan, K. M. Ho and C. M. Soukoulis, Phys. Rev. Lett. 63, 1491 (1989); A. D. Mistriotis, N. Flytzanis and S. C...DiSalvo Professor Roald Hoffmann Department of Chemistry Department of Chemistry Cornell University Cornell University Ithaca, NY 14853 Ithaca, NY 14853

  12. Adsorption and Accommodation of Xe on Pt(111)

    DTIC Science & Technology

    1992-05-25

    atoms on metal surfaces.15. 16 15 May 1992 -7- Acknowledgments The authors would like to thank Dan Auerbach, Mark Cardillo, Milton Cole, Roald ...Phys. Rev. Lett. 66, 1998 (1991). 15. S. C. Wang and G. Ehrlich, J. Chem. Phys. 94, 4071 (1991). 16. D. E. Sanders and A. E. DePristo, Surf. Sci. 254

  13. Interstitial Optical Diagnosis and Treatment of Breast Cancer

    DTIC Science & Technology

    1999-09-01

    A. Hielscher and I.J. Bigio, "Influence of the scattering phase function on light transport measurements in turbid media performed with small source...biological tissue: a new technique for measuring nuclear size distribution," Phys. Rev. Lett. 80, 627-630 (1998). 7. J.R. Mourant, A.H. Hielscher , A.A

  14. B80 and B101-103 clusters: Remarkable stability of the core-shell structures established by validated density functionalsa)

    NASA Astrophysics Data System (ADS)

    Li, Fengyu; Jin, Peng; Jiang, De-en; Wang, Lu; Zhang, Shengbai B.; Zhao, Jijun; Chen, Zhongfang

    2012-02-01

    Prompted by the very recent claim that the volleyball-shaped B80 fullerene [X. Wang, Phys. Rev. B 82, 153409 (2010), 10.1103/PhysRevB.82.153409] is lower in energy than the B80 buckyball [N. G. Szwacki, A. Sadrzadeh, and B. I. Yakobson, Phys. Rev. Lett. 98, 166804 (2007), 10.1103/PhysRevLett.98.166804] and core-shell structure [J. Zhao, L. Wang, F. Li, and Z. Chen, J. Phys. Chem. A 114, 9969 (2010), 10.1021/jp1018873], and inspired by the most recent finding of another core-shell isomer as the lowest energy B80 isomer [S. De, A. Willand, M. Amsler, P. Pochet, L. Genovese, and S. Goedecher, Phys. Rev. Lett. 106, 225502 (2011), 10.1103/PhysRevLett.106.225502], we carefully evaluated the performance of the density functional methods in the energetics of boron clusters and confirmed that the core-shell construction (stuffed fullerene) is thermodynamically the most favorable structural pattern for B80. Our global minimum search showed that both B101 and B103 also prefer a core-shell structure and that B103 can reach the complete core-shell configuration. We called for great attention to the theoretical community when using density functionals to investigate boron-related nanomaterials.

  15. Magnetically Insulated Opening Switch Research.

    DTIC Science & Technology

    1987-01-01

    this research is to investigate the validity of the magneti- cally insulated opening switch concept proposed by Eninger (Ref. 5, Appendix 1). The...1973). 3. Y. Carmel, and J. Nation, Phys, Rev. Lett. 31, 286 (1973). 4. T.J. Orzechowski, and G. Bekefi, Phys. Fluids 19, 43 (1976). U 5. 3. Eninger

  16. Global scaling properties of the spectrum for the Fibonacci chains

    NASA Astrophysics Data System (ADS)

    Zheng, W. M.

    1987-02-01

    By means of the approximate renormalization approach of Niu and Nori [Phys. Rev. Lett. 57, 2057 (1986)] the widths of subband segments in the spectrum and the occupation probabilities on subbands are obtained to the lowest order for the two-value Fibonacci chains. The global scaling properties of the spectrum are then analytically calculated.

  17. Photonic Crystal Light Emitting Diodes

    DTIC Science & Technology

    2006-01-01

    Lett., vol. 61, pp. 1484-1486, 1992. [6] D. K. Serkland, K. D. Choquette, G. R. Hadley, K. M. Geib , and A. A. Allerman, “Two- element phased array of...Cavities,” Ph.D. Dissertation, University of Illinois at Urbana- Champaign, 2005. [14] K. D. Choquette, K. L. Lear, R. P. Schneider, Jr., K. M. Geib , J

  18. VCSEL and Smart Pixel Research for VLSI Photonics

    DTIC Science & Technology

    2007-11-02

    avalanche photodiode”, IEEE Photon. Technol. Lett., 14, 1590 (2002). (b). Conference proceedings: 1. D. Mathes, R. Hull, K. D. Choquette, K. M. Geib ...24 February 1999). 8. D. Mathes, R. Hull, K. D. Choquette, K. M. Geib , R. D. Dupuis, and R. D. Heller, Jr.,“Nanoscale Structural and Chemical

  19. Second Language Proficiency Assessment: Current Issues. Language in Education: Theory and Practice, No. 70.

    ERIC Educational Resources Information Center

    Lowe, Pardee, Jr., Ed.; Stansfield, Charles W., Ed.

    A collection of essays on current issues in the field of second language proficiency assessment includes: "The Unassimilated History" (Pardee Lowe, Jr.), which chronicles the development of proficiency testing; "A Research Agenda" (John L. D. Clark and John Lett), a discussion of research considerations and needs in proficiency testing; "Issues…

  20. Quantum Control of a Spin Qubit Coupled to a Photonic Crystal Cavity

    DTIC Science & Technology

    2013-01-01

    photonic crystal structures. IEEE J. Quant. Electron. 47, 1371–1374 (2011). 21. Alen , B., Bickel, F., Karrai, K., Warburton, R. & Petroff, P. Stark-shift...modulation absorption spectroscopy of single quantum dots. Appl. Phys. Lett. 83, 2235–2237 (2003). 22. Alen , B. et al. Absorptive and dispersive

  1. Opto-EM and Devices Investigation

    DTIC Science & Technology

    1989-06-01

    1983). 4. D. A. B. Miller, D. S. Chemla, D. J. Eilenberger, P. W. Smith, A. C. Gossard, W. Wiegman Appl. Phys. Lett. 4. 925 (1983): 5. A. Ashkin, G. D...Phys. Rep. 2. 199 (1982). 8. D. A. B. Miller, D. S. Chemla, T. C. Damen, T. H. Wood, C. A. Burrus, Jr., A. Bossard, and W. Wiegman , IEEE J. Quantum

  2. Investigation of Heterojunctions and Multiple Quantum Well Structures Using Crystalline Organic Semiconductors

    DTIC Science & Technology

    1993-10-12

    R. Kearns, J. Chem. Phys., 45, 3966 (1966). 26. H. M. Gibbs, S. L. McCall, T. N. C. Venkatesan, A. C. Gossard, A. P. Passner, and W. Wiegman , Appl...Venkatesan. A. C. Gossard. A. P. gthe measured carrier lifetime to theoret- Passner. and W. Wiegman , Appl. Phys. Lett. 35, 451 (1979). By comparing te

  3. Generation of Tunable Coherent Radiation in 3 Micrometers-5 Micrometers Region Using Semiconductor Lasers in External Cavities.

    DTIC Science & Technology

    1987-11-01

    Nordland, and W. Wiegman , J. Appl. Phys. 47, 4509 (1976). 32. K. Vilhelmsson, B. Valk, and M. M. Salour, App[. Phys. Lett. 50, 13, (1987). •. ". 26 N fj *q,)F% *. TPRIT. -. Il Alh ’P % P Jft .P N Z %% --- - .- 0

  4. An Experimental and Theoretical Investigation of Optogalvanic Effects.

    DTIC Science & Technology

    1987-12-01

    41 (1984). 21. R. Warren, Phys. Rev. 98, 1650 (1955). 22. B. N. Ganguly and A. Garscadden , Appl. Phys. Lett. 46, 540 (1985). 23. M. L. Zimmerman, M...Preppernau, and A. Garscadden , J. Appl. Phys. 61, 2778 (1987). 30. The pressure-broadening coefficient of 42.0±2.7 MHz/Torr at 292K for the 501 .6nm

  5. Electron Interactions with Non-Linear Polyatomic Molecules and their Radicals and Ions

    DTIC Science & Technology

    1991-06-01

    IS APPROVED FOR PUBLICATION. ALAN GARSCADDEN LOWELL D. MASSIE Power Components Branch Chief, Power Components Branch Aerospace Power Division...Ferch, B Granitz and W raith, J. Phys. B18, L445 (1985). [36]. A. Garscadden , G L Duke and W F Bailey, Appl. Phys. Lett. 43, 1012 (1983). [37]. H -X

  6. Properties and Adhesion of Polyimides in Microelectronic Devices

    DTIC Science & Technology

    1990-08-15

    where they react at room temperature to polyamic acid. Spin coating (SC) requires that the polymer precursor polyamic acid is applied in a polar ...j.Vac.Sci.Technol A7 (3) (1989) 1402 /31/ J.Russat, Surface and Interface Analyisis , Vol. 11 (1988)414 /32/ M. Grunze and R.N. Lamb, Chem. Phys.Lett. (:987) 133

  7. Cryptanalysis and improvement of multiparty semiquantum secret sharing based on rearranging orders of qubits

    NASA Astrophysics Data System (ADS)

    Yin, Aihan; Fu, Fangbo

    2016-12-01

    Recently, a multiparty semiquantum secret sharing scheme based on rearranging orders of qubits was proposed by Gao et al. [Mod. Phys. Lett. B 30 (2016) 1650130]. In this paper, we show that in their scheme the last agent and other agents can illegally get the sender’s secret keys without being detected. Furthermore, an improved scheme is proposed to resist such attack.

  8. Bierman {ital et al.}Reply:

    SciTech Connect

    Bierman, J.D.; Chan, P.; Liang, J.F.; Kelly, M.P.; Sonzogni, A.A.; Vandenbosch, R.

    1997-05-01

    reply to the Comment by C.H.Dasso et al., Phys. Rev. Lett. 78,XXX(1997). A Reply to the Comment by C.H. Dasso and J. Fern{acute a}ndez-Niello. {copyright} {ital 1997} {ital The American Physical Society}

  9. ARPA-NRL Laser Program - Semiannual Technical Report to Defense Advanced Research Projects Agency, 1 January 1974-30 June 1974

    DTIC Science & Technology

    1975-04-01

    Quan. bloc. Conf., San Francisco (June 1974). 80 ■ • • - . 10, 1 ] li.l,. Patterson, J.D, Gorardo, and A. Wayne Johnson...and A Wayne .lulinson, Appl. Phy«, Lett., Vol. 26, No. 1, 1 July 1974 99 tm 82 S.K. Searles and G.A. Hart: Laser emission in Ar N, mixtures 82

  10. Numerical Experiments on the Stratospheric-Tropospheric Dynamical Interaction.

    DTIC Science & Technology

    1980-04-11

    influence of stratospheric conditions which are representative of a sudden warm- ing on tropospheric weather. Quiroz (1977), McGuirk (1978), and O’Neill and...1979, 155-160. Quiroz , R. S.: 1977, The tropospheric-stratospheric polar vortex breakdown of January 1977. Geophvs. Res. Lett., 4, 151-154. Schoeberl, M

  11. Equivalence of the measures of non-Markovianity for open two-level systems

    NASA Astrophysics Data System (ADS)

    Zeng, Hao-Sheng; Tang, Ning; Zheng, Yan-Ping; Wang, Guo-You

    2011-09-01

    Different measures have been presented to depict the deviation of quantum time evolution in open systems from Markovian processes. We demonstrate that the measure proposed by Breuer, Laine, and Piilo [Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.103.210401 103, 210401 (2009)] and the two measures proposed by Rivas, Huelga, and Plenio [Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.105.050403 105, 050403 (2010)] have exactly the same non-Markovian time-evolution intervals and thus are really equivalent to each other when they are applied to open two-level systems coupled to environments via the Jaynes-Cummings or dephasing models. This equivalence implies that the three measures, in different ways, capture the intrinsic character of the non-Markovianity of quantum evolutional processes. We also show that the maximization in the definition of the first measure can be actually removed for the considered models without influencing the sensibility of the measure to detect non-Markovianity.

  12. Mathematics in Literature and Cinema: An Interdisciplinary Course

    ERIC Educational Resources Information Center

    Chabrán, H. Rafael; Kozek, Mark

    2016-01-01

    We describe our team-taught, interdisciplinary course "Numb3rs in Lett3rs & Fi1ms: Mathematics in Literature and Cinema," which explores mathematics in the context of modern literature and cinema. Our goal with this course is to advance collaborations between mathematics and the written/theatre-based creative arts.

  13. Materials Characterization and Microelectronic Implementation of Metal-insulator Transition Materials and Phase Change Materials

    DTIC Science & Technology

    2015-03-26

    the black and red curves have 9 points, the green curve has 8 points, the blue curve has 7 points, the cyan curve has 6 points, and the magenta...chemometrics technique," Appl. Phys. Lett., vol. 90, no. 4, 2007. [125] C. J. Strachan, T. Rades, D. A. Newnham, K. C. Gordon, M. Pepper and P. F

  14. Self-truncation and scaling in Euler-Voigt-α and related fluid models

    NASA Astrophysics Data System (ADS)

    Di Molfetta, Giuseppe; Krstlulovic, Giorgio; Brachet, Marc

    2015-07-01

    A generalization of the 3D Euler-Voigt-α model is obtained by introducing derivatives of arbitrary order β (instead of 2) in the Helmholtz operator. The β →∞ limit is shown to correspond to Galerkin truncation of the Euler equation. Direct numerical simulations (DNS) of the model are performed with resolutions up to 20483 and Taylor-Green initial data. DNS performed at large β demonstrate that this simple classical hydrodynamical model presents a self-truncation behavior, similar to that previously observed for the Gross-Pitaeveskii equation in Krstulovic and Brachet [Phys. Rev. Lett. 106, 115303 (2011), 10.1103/PhysRevLett.106.115303]. The self-truncation regime of the generalized model is shown to reproduce the behavior of the truncated Euler equation demonstrated in Cichowlas et al. [Phys. Rev. Lett. 95, 264502 (2005), 10.1103/PhysRevLett.95.264502]. The long-time growth of the self-truncation wave number kst appears to be self-similar. Two related α -Voigt versions of the eddy-damped quasinormal Markovian model and the Leith model are introduced. These simplified theoretical models are shown to reasonably reproduce intermediate time DNS results. The values of the self-similar exponents of these models are found analytically.

  15. RF Heating the Ionosphere,

    DTIC Science & Technology

    1987-08-01

    Kopka, Geophys. Res. Lett. 11, 523 (1984). 4. H.C. Carlson, V.B. Wickwar, and G. P. Mantas, J. Atmos. and Terr. Phys. 44, 1089 (1982) 5. E. Mjolhus and T...Ionosphere," G. J. Morales, presented at the Seventh APS Topical Conference, Kissimmee, Florida, May 4-6, 1987. PPG- 1089 "Self-Consistent Modification

  16. Physics Beyond the Standard Model from Molecular Hydrogen Spectroscopy

    NASA Astrophysics Data System (ADS)

    Ubachs, Wim; Salumbides, Edcel John; Bagdonaite, Julija

    2015-06-01

    The spectrum of molecular hydrogen can be measured in the laboratory to very high precision using advanced laser and molecular beam techniques, as well as frequency-comb based calibration [1,2]. The quantum level structure of this smallest neutral molecule can now be calculated to very high precision, based on a very accurate (10-15 precision) Born-Oppenheimer potential [3] and including subtle non-adiabatic, relativistic and quantum electrodynamic effects [4]. Comparison between theory and experiment yields a test of QED, and in fact of the Standard Model of Physics, since the weak, strong and gravitational forces have a negligible effect. Even fifth forces beyond the Standard Model can be searched for [5]. Astronomical observation of molecular hydrogen spectra, using the largest telescopes on Earth and in space, may reveal possible variations of fundamental constants on a cosmological time scale [6]. A study has been performed at a 'look-back' time of 12.5 billion years [7]. In addition the possible dependence of a fundamental constant on a gravitational field has been investigated from observation of molecular hydrogen in the photospheres of white dwarfs [8]. The latter involves a test of the Einsteins equivalence principle. [1] E.J. Salumbides et al., Phys. Rev. Lett. 107, 143005 (2011). [2] G. Dickenson et al., Phys. Rev. Lett. 110, 193601 (2013). [3] K. Pachucki, Phys. Rev. A82, 032509 (2010). [4] J. Komasa et al., J. Chem. Theory Comp. 7, 3105 (2011). [5] E.J. Salumbides et al., Phys. Rev. D87, 112008 (2013). [6] F. van Weerdenburg et al., Phys. Rev. Lett. 106, 180802 (2011). [7] J. Badonaite et al., Phys. Rev. Lett. 114, 071301 (2015). [8] J. Bagdonaite et al., Phys. Rev. Lett. 113, 123002 (2014).

  17. The effects of the N atom collective Lamb shift on single photon superradiance

    NASA Astrophysics Data System (ADS)

    Scully, Marlan O.; Svidzinsky, Anatoly A.

    2009-03-01

    The problem of single photon collective spontaneous emission, a.k.a. superradiance, from N atoms prepared by a single photon pulse of wave vector k has been the subject of recent interest. It has been shown that a single photon absorbed uniformly by the N atoms will be followed by spontaneous emission in the same direction [M. Scully, E. Fry, C.H.R. Ooi, K. Wodkiewicz, Phys. Rev. Lett. 96 (2006) 010501; M. Scully, Laser Phys. 17 (2007) 635]; and in extensions of this work we have found a new kind of cavity QED in which the atomic cloud acts as a cavity containing the photon [A.A. Svidzinsky, J.T. Chang, M.O. Scully, Phys. Rev. Lett. 100 (2008) 160504]. In most of our studies, we have neglected virtual photon (“Lamb shift”) contributions. However, in a recent interesting paper, Friedberg and Mannassah [R. Friedberg, J.T. Manassah, Phys. Lett. A 372 (2008) 2514] study the effect of virtual photons investigating ways in which such effects can modify the time dependence and angular distributions of collective single photon emission. In the present Letter, we show that such virtual transitions play no essential role in our problem. The conclusions of [M. Scully, E. Fry, C.H.R. Ooi, K. Wodkiewicz, Phys. Rev. Lett. 96 (2006) 010501; M. Scully, Laser Phys. 17 (2007) 635; A.A. Svidzinsky, J.T. Chang, M.O. Scully, Phys. Rev. Lett. 100 (2008) 160504] stand as published. However, the N atom Lamb shift is an interesting problem in its own right and we here extend previous work both analytically and numerically.

  18. Particle-hole symmetry and Luttinger liquids in a quantum Hall circuit

    NASA Astrophysics Data System (ADS)

    Roddaro, Stefano

    2006-03-01

    I shall present recent experimental results on edge-state transport through quantum point contacts in the quantum Hall (QH) regime. Finite-bias backscattering measurements between edge channels at filling factor ν=1 will be presented at different temperatures. Transport through the constriction displays a non-linear Luttinger-like behavior even in the integer QH regime in contrast with the linear tunneling predicted for integer edge states [1,2]. Both zero-bias enhancement and suppression of the inter-edge tunneling will be shown in a controllable way as a function of gate bias [2,3,4]. The observed evolution is connected to the local charge depletion in the constriction region and offers new insight into the link between QH charge-conjugation and Luttinger liquid description of edge channels [2]. I shall discuss the relevance of these experimental results in the context of the dynamics of the highly-correlated edge channels in the fractional QH regime [5]. Finally I shall demonstrate how charge-conjugation can be exploited in the design of new QH circuits where the transport properties of the hole component of a partially filled Landau level can be directly addressed. [1] X.-G. Wen, Phys. Rev. Lett. 62, 2206 (1990); P. Fendley et al. Phys. Rev. Lett. 74, 3005 (1995). [2] S. Roddaro, V. Pellegrini, F. Beltram, L. N. Pfeiffer, K. W. West, Phys. Rev. Lett. 95, 156804 (2005). [3] S. Roddaro, V. Pellegrini, F. Beltram, G. Biasiol, L. Sorba., Phys. Rev. Lett. 93, 046801 (2004). [4] S. Roddaro, V. Pellegrini, F. Beltram, G. Biasiol, L. Sorba, R. Raimondi, G. Vignale, Phys. Rev. Lett. 90, 046805 (2003). [5] A. M. Chang, Rev. Mod. Phys. 75, 1449 (2003).

  19. Fault-tolerant logical gates in quantum error-correcting codes

    NASA Astrophysics Data System (ADS)

    Pastawski, Fernando; Yoshida, Beni

    2015-01-01

    Recently, S. Bravyi and R. König [Phys. Rev. Lett. 110, 170503 (2013), 10.1103/PhysRevLett.110.170503] have shown that there is a trade-off between fault-tolerantly implementable logical gates and geometric locality of stabilizer codes. They consider locality-preserving operations which are implemented by a constant-depth geometrically local circuit and are thus fault tolerant by construction. In particular, they show that, for local stabilizer codes in D spatial dimensions, locality-preserving gates are restricted to a set of unitary gates known as the D th level of the Clifford hierarchy. In this paper, we explore this idea further by providing several extensions and applications of their characterization to qubit stabilizer and subsystem codes. First, we present a no-go theorem for self-correcting quantum memory. Namely, we prove that a three-dimensional stabilizer Hamiltonian with a locality-preserving implementation of a non-Clifford gate cannot have a macroscopic energy barrier. This result implies that non-Clifford gates do not admit such implementations in Haah's cubic code and Michnicki's welded code. Second, we prove that the code distance of a D -dimensional local stabilizer code with a nontrivial locality-preserving m th -level Clifford logical gate is upper bounded by O (LD +1 -m) . For codes with non-Clifford gates (m >2 ), this improves the previous best bound by S. Bravyi and B. Terhal [New. J. Phys. 11, 043029 (2009), 10.1088/1367-2630/11/4/043029]. Topological color codes, introduced by H. Bombin and M. A. Martin-Delgado [Phys. Rev. Lett. 97, 180501 (2006), 10.1103/PhysRevLett.97.180501; Phys. Rev. Lett. 98, 160502 (2007), 10.1103/PhysRevLett.98.160502; Phys. Rev. B 75, 075103 (2007), 10.1103/PhysRevB.75.075103], saturate the bound for m =D . Third, we prove that the qubit erasure threshold for codes with a nontrivial transversal m th -level Clifford logical gate is upper bounded by 1 /m . This implies that no family of fault-tolerant codes with

  20. Quantum-key-distribution protocols without sifting that are resistant to photon-number-splitting attacks

    NASA Astrophysics Data System (ADS)

    Grazioso, Fabio; Grosshans, Frédéric

    2013-11-01

    We propose a family of sifting-less quantum-key-distribution protocols which use reverse reconciliation, and are based on weak coherent pulses (WCPs) polarized along m different directions. When m=4, the physical part of the protocol is identical to most experimental implementations of BB84 [Bennett and Brassard, in Proceedings of the IEEE International Conference on Computers, Systems, and Signal Processing (IEEE, New York, 1984)] and SARG04 [Scarani, Acín, Ribordy, and Gisin, Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.92.057901 92, 057901 (2004); Acín, Gisin, and Scarani, Phys. Rev. APLRAAN1050-294710.1103/PhysRevA.69.012309 69, 012309 (2004)] protocols and they differ only in classical communications and data processing. We compute their total key rate as a function of the channel transmission T, using general information theoretical arguments, and we show that they have a higher key rate than the more standard protocols, both for fixed and optimized average photon number of the WCPs. When no decoy-state protocols (DSPs) [Hwang, Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.91.057901 91, 057901 (2003); Lo, Ma, and Chen, Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.94.230504 94, 230504 (2005); Wang, Phys. Rev. APLRAAN1050-294710.1103/PhysRevA.72.012322 72, 012322 (2005)] are applied, the scaling of the key rate with transmission is improved from T2 for BB84 to T1+(1)/(m-2). If a DSP is applied, we show how the key rates scale linearly with T, with an improvement of the prefactor by 75.96% for m=4. High values of m allow one to asymptotically approach the key rate obtained with ideal single-photon pulses. The fact that the key rates of these sifting-less protocols are higher compared to those of the aforementioned more standard protocols show that the latter are not optimal, since they do not extract all the available secret keys from the experimental correlations.

  1. Energy relaxation at quantum Hall edge

    NASA Astrophysics Data System (ADS)

    Levkivskyi, Ivan P.; Sukhorukov, Eugene V.

    2012-02-01

    In this work, we address the recent experiments [C. Altimiras , Nat. Phys.1745-247310.1038/nphys1429 6, 34 (2010); H. le Sueur , Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.105.056803 105, 056803 (2010);C. Altimiras , Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.105.226804 105, 226804 (2010)], where an electron distribution function at the quantum Hall (QH) edge at filling factor ν=2 has been measured with high precision. It has been reported that the energy of electrons injected into one of the two chiral edge channels with the help of a quantum point contact (QPC) is equally distributed between them, in agreement with earlier predictions, one being based on the Fermi gas approach [A. M. Lunde , Phys. Rev. BPRBMDO1098-012110.1103/PhysRevB.81.041311 81, 041311(R) (2010)] and the other utilizing the Luttinger-liquid theory [P. Degiovanni , Phys. Rev. BPRBMDO1098-012110.1103/PhysRevB.81.121302 81, 121302(R) (2010)]. We argue that the physics of the energy relaxation process at the QH edge may in fact be more rich, providing the possibility for discriminating between two physical pictures in experiment. Namely, using the recently proposed nonequilibrium bosonization technique [I. P. Levkivskyi , Phys. Rev. Lett., PRLTAO0031-900710.1103/PhysRevLett.103.036801 103, 036801 (2009)], we evaluate the electron distribution function and find that the initial “double-step” distribution created at a QPC evolves through several intermediate asymptotics before reaching eventual equilibrium state. At short distances, the distribution function is found to be asymmetric due to non-Gaussian current noise effects. At larger distances, where noise becomes Gaussian, the distribution function acquires symmetric Lorentzian shape. Importantly, in the regime of low QPC transparencies T, the width of the Lorentzian scales linearly with T, in contrast to the case of equilibrium Fermi distribution, the width of which scales as T. Therefore, we propose to do measurements at

  2. Fast fracture in slow motion: Dynamic fracture and the effect of near-tip elastic nonlinearities in brittle gels

    NASA Astrophysics Data System (ADS)

    Fineberg, Jay

    2012-02-01

    We present recent results of fracture experiments in poly-acrylamide gels [1]. These gels are soft polymers in which the characteristic sound speeds are on the order of a few meters/sec - thereby slowing down fracture dynamics by 3 orders of magnitude. We first show that the dynamics of rapid cracks are universal; the fracture of gels exhibits characteristic features that are identical with those seen in ``classic'' materials such as glass. These include: *Excellent quantitative agreement with the two different equations of motion for single dynamic cracks predicted by Linear Elastic Fracture Mechanics (LEFM) -- each for different classes of loading conditions. *The same branching instabilities, localized waves confined to the crack front, and the characteristic structure formed on the resulting fracture surface as observed in ``standard'' amorphous brittle materials, such as soda-lime glass. We utilize the ``slow motion'' inherent in the fracture of gels to experimentally and theoretically investigate the structure of the deformation fields that surround the tip of highly dynamic cracks. We find that: *The singular fields predicted by LEFM change their structure due to nonlinear elastic effects that dominate the near-tip region [3]. *This non-linear elastic region provides a quantitative explanation for the oscillatory instability of cracks [2,4] as their speed approaches the Rayleigh wave speed. These results provide a quantitative first-principles description of how elastic nonlinearity influences the rapid dynamics of a crack. [4pt] [1] A. Livne, G. Cohen, and J. Fineberg, Physical Rev. Lett. 94, 224301 (2005); T. Goldman, A. Livne, and J. Fineberg, Physical Rev. Lett. 104, 11430 (2010).[0pt] [2] A. Livne, O. Ben-David, and J. Fineberg, Phys. Rev. Lett.,98, 124301 (2007).[0pt] [3] A. Livne, E. Bouchbinder, and J. Fineberg, Phys. Rev. Lett. 101, 264301 (2008);. E. Bouchbinder, A. Livne, and J. Fineberg, Phys. Rev. Lett. 101, 264302 (2008); A. Livne, E

  3. Phase diagram of fractional quantum Hall effect of composite fermions in multicomponent systems

    NASA Astrophysics Data System (ADS)

    Balram, Ajit C.; Tőke, Csaba; Wójs, A.; Jain, J. K.

    2015-01-01

    While the integer quantum Hall effect of composite fermions manifests as the prominent fractional quantum Hall effect (FQHE) of electrons, the FQHE of composite fermions produces further, more delicate states, arising from a weak residual interaction between composite fermions. We study the spin phase diagram of these states, motivated by the recent experimental observation by Liu and co-workers [Phys. Rev. Lett. 113, 246803 (2014), 10.1103/PhysRevLett.113.246803 and private communication] of several spin-polarization transitions at 4/5, 5/7, 6/5, 9/7, 7/9, 8/11, and 10/13 in GaAs systems. We show that the FQHE of composite fermions is much more prevalent in multicomponent systems, and consider the feasibility of such states for systems with N components for an SU(N ) symmetric interaction. Our results apply to GaAs quantum wells, wherein electrons have two components, to AlAs quantum wells and graphene, wherein electrons have four components (two spins and two valleys), and to an H-terminated Si(111) surface, which can have six components. The aim of this paper is to provide a fairly comprehensive list of possible incompressible fractional quantum Hall states of composite fermions, their SU(N ) spin content, their energies, and their phase diagram as a function of the generalized "Zeeman" energy. We obtain results at three levels of approximation: from ground-state wave functions of the composite fermion theory, from composite fermion diagonalization, and, whenever possible, from exact diagonalization. Effects of finite quantum well thickness and Landau-level mixing are neglected in this study. We compare our theoretical results with the experiments of Liu and co-workers [Phys. Rev. Lett. 113, 246803 (2014), 10.1103/PhysRevLett.113.246803 and private communication] as well as of Yeh et al., [Phys. Rev. Lett. 82, 592 (1999), 10.1103/PhysRevLett.82.592] for a two-component system.

  4. Impact of Duality Violations on Spectral Sum Rule analyses

    NASA Astrophysics Data System (ADS)

    Catà, Oscar

    2007-02-01

    Recent sum rule analyses on the two-point correlator have led to significant discrepancies in the values found for the OPE condensates, most dramatically in the dimension eight condensate and to a lesser extent in the dimension six one [R. Barate et al., ALEPH Collaboration, Eur. Phys. J. C 4 (1998) 409; K. Ackerstaff et al., OPAL Collaboration, Eur. Phys. J. C 7 (1999) 571, arXiv:hep-ex/9808019; S. Peris, B. Phily and E. de Rafael, Phys. Rev. Lett. 86 (2001) 14, arXiv:hep-ph/0007338; S. Friot, D. Greynat and E. de Rafael, JHEP 0410 (2004) 043, arXiv:hep-ph/0408281; M. Davier, L. Girlanda, A. Hocker and J. Stern, Phys. Rev. D 58 (1998) 096014, arXiv:hep-ph/9802447; B.L. Ioffe and K.N. Zyablyuk, Nucl. Phys. A 687 (2001) 437, arXiv:hep-ph/0010089. K.N. Zyablyuk, Eur. Phys. J. C 38 (2004) 215, arXiv:hep-ph/0404230; J. Bijnens, E. Gamiz and J. Prades, JHEP 0110 (2001) 009, arXiv:hep-ph/0108240; C.A. Dominguez and K. Schilcher, Phys. Lett. B 581 (2004) 193, arXiv:hep-ph/0309285; J. Rojo and J. I. Latorre, JHEP 0401 (2004) 055, arXiv:hep-ph/0401047; V. Cirigliano, E. Golowich and K. Maltman, Phys. Rev. D 68 (2003) 054013, arXiv:hep-ph/0305118; S. Ciulli, C. Sebu, K. Schilcher and H. Spiesberger, Phys. Lett. B 595 (2004) 359, arXiv:hep-ph/0312212. S. Narison, arXiv:hep-ph/0412152]. Precise knowledge of these condensates is of relevance in kaon decays [M. Knecht, S. Peris and E. de Rafael, Phys. Lett. B 457 (1999) 227, arXiv:hep-ph/9812471; J.F. Donoghue and E. Golowich, Phys. Lett. B 478 (2000) 172, arXiv:hep-ph/9911309; M. Knecht, S. Peris and E. de Rafael, Phys. Lett. B 508 (2001) 117, arXiv:hep-ph/0102017] and therefore it seems mandatory to assess the actual impact of what is commonly neglected in spectral sum rules, most prominently the issue of duality violations. We will explicitly compute them in a toy model and show that they are a priori non-negligible.

  5. Search for WH associated production in 5.3 fb-1 of pp¯ collisions at the Fermilab Tevatron

    NASA Astrophysics Data System (ADS)

    D0 Collaboration; Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; Adams, T.; Alexeev, G. D.; Alkhazov, G.; Alton, A.; Alverson, G.; Alves, G. A.; Ancu, L. S.; Aoki, M.; Arov, M.; Askew, A.; Åsman, B.; Atramentov, O.; Avila, C.; Backusmayes, J.; Badaud, F.; Bagby, L.; Baldin, B.; Bandurin, D. V.; Banerjee, S.; Barberis, E.; Baringer, P.; Barreto, J.; Bartlett, J. F.; Bassler, U.; Bazterra, V.; Beale, S.; Bean, A.; Begalli, M.; Begel, M.; Belanger-Champagne, C.; Bellantoni, L.; Beri, S. B.; Bernardi, G.; Bernhard, R.; Bertram, I.; Besançon, M.; Beuselinck, R.; Bezzubov, V. A.; Bhat, P. C.; Bhatnagar, V.; Blazey, G.; Blessing, S.; Bloom, K.; Boehnlein, A.; Boline, D.; Bolton, T. A.; Boos, E. E.; Borissov, G.; Bose, T.; Brandt, A.; Brandt, O.; Brock, R.; Brooijmans, G.; Bross, A.; Brown, D.; Brown, J.; Bu, X. B.; Buehler, M.; Buescher, V.; Bunichev, V.; Burdin, S.; Burnett, T. H.; Buszello, C. P.; Calpas, B.; Camacho-Pérez, E.; Carrasco-Lizarraga, M. A.; Casey, B. C. K.; Castilla-Valdez, H.; Chakrabarti, S.; Chakraborty, D.; Chan, K. M.; Chandra, A.; Chen, G.; Chevalier-Théry, S.; Cho, D. K.; Cho, S. W.; Choi, S.; Choudhary, B.; Christoudias, T.; Cihangir, S.; Claes, D.; Clutter, J.; Cooke, M.; Cooper, W. E.; Corcoran, M.; Couderc, F.; Cousinou, M.-C.; Croc, A.; Cutts, D.; Das, A.; Davies, G.; de, K.; de Jong, S. J.; de La Cruz-Burelo, E.; Déliot, F.; Demarteau, M.; Demina, R.; Denisov, D.; Denisov, S. P.; Desai, S.; Devaughan, K.; Diehl, H. T.; Diesburg, M.; Dominguez, A.; Dorland, T.; Dubey, A.; Dudko, L. V.; Duggan, D.; Duperrin, A.; Dutt, S.; Dyshkant, A.; Eads, M.; Edmunds, D.; Ellison, J.; Elvira, V. D.; Enari, Y.; Evans, H.; Evdokimov, A.; Evdokimov, V. N.; Facini, G.; Ferbel, T.; Fiedler, F.; Filthaut, F.; Fisher, W.; Fisk, H. E.; Fortner, M.; Fox, H.; Fuess, S.; Gadfort, T.; Garcia-Bellido, A.; Gavrilov, V.; Gay, P.; Geist, W.; Geng, W.; Gerbaudo, D.; Gerber, C. E.; Gershtein, Y.; Ginther, G.; Golovanov, G.; Goussiou, A.; Grannis, P. D.; Greder, S.; Greenlee, H.; Greenwood, Z. D.; Gregores, E. M.; Grenier, G.; Gris, Ph.; Grivaz, J.-F.; Grohsjean, A.; Grünendahl, S.; Grünewald, M. W.; Guo, F.; Gutierrez, G.; Gutierrez, P.; Haas, A.; Hagopian, S.; Haley, J.; Han, L.; Harder, K.; Harel, A.; Hauptman, J. M.; Hays, J.; Head, T.; Hebbeker, T.; Hedin, D.; Hegab, H.; Heinson, A. P.; Heintz, U.; Hensel, C.; Heredia-de La Cruz, I.; Herner, K.; Hildreth, M. D.; Hirosky, R.; Hoang, T.; Hobbs, J. D.; Hoeneisen, B.; Hohlfeld, M.; Hossain, S.; Hubacek, Z.; Huske, N.; Hynek, V.; Iashvili, I.; Illingworth, R.; Ito, A. S.; Jabeen, S.; Jaffré, M.; Jain, S.; Jamin, D.; Jesik, R.; Johns, K.; Johnson, M.; Johnston, D.; Jonckheere, A.; Jonsson, P.; Joshi, J.; Juste, A.; Kaadze, K.; Kajfasz, E.; Karmanov, D.; Kasper, P. A.; Katsanos, I.; Kehoe, R.; Kermiche, S.; Khalatyan, N.; Khanov, A.; Kharchilava, A.; Kharzheev, Y. N.; Khatidze, D.; Kirby, M. H.; Kohli, J. M.; Kozelov, A. V.; Kraus, J.; Kumar, A.; Kupco, A.; Kurča, T.; Kuzmin, V. A.; Kvita, J.; Lammers, S.; Landsberg, G.; Lebrun, P.; Lee, H. S.; Lee, S. W.; Lee, W. M.; Lellouch, J.; Li, L.; Li, Q. Z.; Lietti, S. M.; Lim, J. K.; Lincoln, D.; Linnemann, J.; Lipaev, V. V.; Lipton, R.; Liu, Y.; Liu, Z.; Lobodenko, A.; Lokajicek, M.; Love, P.; Lubatti, H. J.; Luna-Garcia, R.; Lyon, A. L.; Maciel, A. K. A.; Mackin, D.; Madar, R.; Magaña-Villalba, R.; Malik, S.; Malyshev, V. L.; Maravin, Y.; Martínez-Ortega, J.; McCarthy, R.; McGivern, C. L.; Meijer, M. M.; Melnitchouk, A.; Menezes, D.; Mercadante, P. G.; Merkin, M.; Meyer, A.; Meyer, J.; Miconi, F.; Mondal, N. K.; Muanza, G. S.; Mulhearn, M.; Nagy, E.; Naimuddin, M.; Narain, M.; Nayyar, R.; Neal, H. A.; Negret, J. P.; Neustroev, P.; Novaes, S. F.; Nunnemann, T.; Obrant, G.; Orduna, J.; Osman, N.; Osta, J.; Otero Y Garzón, G. J.; Owen, M.; Padilla, M.; Pangilinan, M.; Parashar, N.; Parihar, V.; Park, S. K.; Parsons, J.; Partridge, R.; Parua, N.; Patwa, A.; Penning, B.; Perfilov, M.; Peters, K.; Peters, Y.; Petrillo, G.; Pétroff, P.; Piegaia, R.; Piper, J.; Pleier, M.-A.; Podesta-Lerma, P. L. M.; Podstavkov, V. M.; Pol, M.-E.; Polozov, P.; Popov, A. V.; Prewitt, M.; Price, D.; Protopopescu, S.; Qian, J.; Quadt, A.; Quinn, B.; Rangel, M. S.; Ranjan, K.; Ratoff, P. N.; Razumov, I.; Renkel, P.; Rijssenbeek, M.; Ripp-Baudot, I.; Rizatdinova, F.; Rominsky, M.; Royon, C.; Rubinov, P.; Ruchti, R.; Safronov, G.; Sajot, G.; Sánchez-Hernández, A.; Sanders, M. P.; Sanghi, B.; Santos, A. S.; Savage, G.; Sawyer, L.; Scanlon, T.; Schamberger, R. D.; Scheglov, Y.; Schellman, H.; Schliephake, T.; Schlobohm, S.; Schwanenberger, C.; Schwienhorst, R.; Sekaric, J.; Severini, H.; Shabalina, E.; Shary, V.; Shchukin, A. A.; Shivpuri, R. K.; Simak, V.; Sirotenko, V.; Skubic, P.; Slattery, P.; Smirnov, D.; Smith, K. J.; Snow, G. R.; Snow, J.; Snyder, S.; Söldner-Rembold, S.; Sonnenschein, L.; Sopczak, A.; Sosebee, M.; Soustruznik, K.; Spurlock, B.; Stark, J.; Stolin, V.; Stoyanova, D. A.; Strauss, M.; Strom, D.; Stutte, L.; Suter, L.; Svoisky, P.; Takahashi, M.; Tanasijczuk, A.; Taylor, W.; Titov, M.; Tokmenin, V. V.; Tsai, Y.-T.; Tsybychev, D.; Tuchming, B.; Tully, C.; Tuts, P. M.; Uvarov, L.; Uvarov, S.; Uzunyan, S.; van Kooten, R.; van Leeuwen, W. M.; Varelas, N.; Varnes, E. W.; Vasilyev, I. A.; Verdier, P.; Vertogradov, L. S.; Verzocchi, M.; Vesterinen, M.; Vilanova, D.; Vint, P.; Vokac, P.; Wahl, H. D.; Wang, M. H. L. S.; Warchol, J.; Watts, G.; Wayne, M.; Weber, M.; Welty-Rieger, L.; White, A.; Wicke, D.; Williams, M. R. J.; Wilson, G. W.; Wimpenny, S. J.; Wobisch, M.; Wood, D. R.; Wyatt, T. R.; Xie, Y.; Xu, C.; Yacoob, S.; Yamada, R.; Yang, W.-C.; Yasuda, T.; Yatsunenko, Y. A.; Ye, Z.; Yin, H.; Yip, K.; Youn, S. W.; Yu, J.; Zelitch, S.; Zhao, T.; Zhou, B.; Zhu, J.; Zielinski, M.; Zieminska, D.; Zivkovic, L.

    2011-03-01

    We present a search for associated production of Higgs and W bosons in pp¯ collisions at a center of mass energy of s=1.96 TeV in 5.3 fb-1 of integrated luminosity recorded by the D0 experiment. Multivariate analysis techniques are applied to events containing one lepton, an imbalance in transverse energy, and one or two b-tagged jets to discriminate a potential WH signal from Standard Model backgrounds. We observe good agreement between data and expected backgrounds, and set an upper limit of 4.5 (at 95% confidence level and for m=115 GeV) on the ratio of the WH cross section multiplied by the branching fraction of H→bb¯ to its Standard Model prediction, which is consistent with an expected limit of 4.8.KeywordsTevatronStandard ModelHiggs bosonElectroweak symmetry breakingReferencesALEPH CollaborationDELPHI CollaborationL3 CollaborationOPAL CollaborationLEP Working Group for Higgs Boson SearchesPhys. Lett. B565200361LEP Electroweak Working Grouphttp://lepewwg.web.cern.ch/LEPEWWG/T.AaltonenCDF CollaborationPhys. Rev. Lett.1042010061803V.M.AbazovD0 CollaborationPhys. Rev. Lett.1042010061804T.AaltonenCDF CollaborationD0 CollaborationPhys. Rev. Lett.1042010061802T. Aaltonen, et al., CDF Collaboration, D0 Collaboration, FERMILAB-CONF-10-257-E, 2010.V.M.AbazovD0 CollaborationPhys. Rev. Lett.942005091802V.M.AbazovD0 CollaborationPhys. Lett. B663200826V.M.AbazovD0 CollaborationPhys. Rev. Lett.1022009051803D.AcostaCDF CollaborationPhys. Rev. Lett.942005091802T.AaltonenCDF CollaborationPhys. Rev. Lett.1002008041801T.AaltonenCDF CollaborationPhys. Rev. Lett.1032009101802V.M.AbazovD0 CollaborationNucl. Instrum. Methods Phys. Res. A5652006463Pseudorapidity η=-ln[tanθ2], where θ is the polar angle as measured from the beam axis; ϕ is the azimuthal angle. The separation between two objects in η, ϕ space is ΔR=(Δ+(Δ.S.AbachiNucl. Instrum. Methods Phys. Res. A3381994185R.AngstadtNucl. Instrum. Methods Phys. Res. A6222010298M.AbolinsNucl. Instrum. Methods Phys. Res. A

  6. Dispersive estimate of the electromagnetic charge symmetry violation in the octet baryon masses

    NASA Astrophysics Data System (ADS)

    Erben, F. B.; Shanahan, P. E.; Thomas, A. W.; Young, R. D.

    2014-12-01

    We explore the electromagnetic contribution to the charge symmetry breaking in the octet baryon masses using a subtracted dispersion relation based on the Cottingham formula. For the proton-neutron mass splitting we report a minor revision of the recent analysis of Walker-Loud, Carlson, and Miller [Phys. Rev. Lett. 108, 232301 (2012), 10.1103/PhysRevLett.108.232301]. For the electromagnetic structure of the hyperons we constrain our analysis, where possible, by a combination of lattice QCD and SU(3) symmetry-breaking estimates. The results for the baryon mass splittings are found to be compatible with recent lattice QCD +QED determinations. The uncertainties in the dispersive analysis are dominated by the lack of knowledge of the hyperon inelastic structure.

  7. Optimal control of the power adiabatic stroke of an optomechanical heat engine

    NASA Astrophysics Data System (ADS)

    Bathaee, M.; Bahrampour, A. R.

    2016-08-01

    We consider the power adiabatic stroke of the Otto optomechanical heat engine introduced in Phys. Rev. Lett. 112, 150602 (2014), 10.1103/PhysRevLett.112.150602. We derive the maximum extractable work of both optomechanical normal modes in the minimum time while the system experiences quantum friction effects. We show that the total work done by the system in the power adiabatic stroke is optimized by a bang-bang control. The time duration of the power adiabatic stroke is of the order of the inverse of the effective optomechanical-coupling coefficient. The optimal phase-space trajectory of the Otto cycle for both optomechanical normal modes is also obtained.

  8. Additivity Principle in High-Dimensional Deterministic Systems

    NASA Astrophysics Data System (ADS)

    Saito, Keiji; Dhar, Abhishek

    2011-12-01

    The additivity principle (AP), conjectured by Bodineau and Derrida [Phys. Rev. Lett. 92, 180601 (2004)PRLTAO0031-900710.1103/PhysRevLett.92.180601], is discussed for the case of heat conduction in three-dimensional disordered harmonic lattices to consider the effects of deterministic dynamics, higher dimensionality, and different transport regimes, i.e., ballistic, diffusive, and anomalous transport. The cumulant generating function (CGF) for heat transfer is accurately calculated and compared with the one given by the AP. In the diffusive regime, we find a clear agreement with the conjecture even if the system is high dimensional. Surprisingly, even in the anomalous regime the CGF is also well fitted by the AP. Lower-dimensional systems are also studied and the importance of three dimensionality for the validity is stressed.

  9. Calculation of the total and total ionization cross sections for positron scattering on atomic hydrogen

    SciTech Connect

    Bray, I. ); Stelbovics, A.T. )

    1994-04-01

    The total and total ionization cross sections for positron scattering on atomic hydrogen are calculated by applying the convergent-close-coupling method to the model where positronium-formation channels are omitted. This model accurately describes the physics of the scattering whenever the positronium formation cross section is negligible, in particular, above 100 eV for this system. The total ionization cross section results in this energy region are in excellent agreement with the recent measurements of Jones [ital et] [ital al]. [J. Phys. B 26, L483 (1993)], and so lie below the earlier measurements of Spicher [Phys. Rev. Lett. 64, 1019 (1990)], and the recent calculations of Acacia [ital et] [ital al]. [Phys. Rev. Lett. (to be published)]. The total cross section is in very good agreement with the recent measurements of Zhou [ital et] [ital al]. (unpublished) down to 30 eV.

  10. Dynamic Scaling of Island-size Distribution on Anisotropic Surfaces

    NASA Astrophysics Data System (ADS)

    Li, Maozhi; Wang, E. G.; Liu, Banggui; Zhang, Zhenyu

    2002-03-01

    Dynamic scaling of island-size distribution on isotropic and anisotropic surfaces in submonolayer growth is systematically studied using kinetic Monte Carlo simulations. It is found that the island-size distribution in anisotropic submonolayer growth exhibits a general dynamic scaling behavior. An analytic expression is proposed for the scaling function, and is compared with the simulation results. This scaling function not only improves previous results for the isotropic growth (1), but also describes the scaling behavior of the island-size distribution in anisotropic submonolayer growth very well (2). 1. J. G. Amar and F. Family, Phys. Rev. Lett. 74, 2066 (1995). 2. M. Z. Li, E. G. Wang, B. G. Liu, and Z. Y. Zhang, Phys. Rev. Lett. (submitted).

  11. Superfluidity of grain boundaries and supersolid behavior

    NASA Astrophysics Data System (ADS)

    Balibar, Sebastien

    2007-03-01

    We have found that, at the liquid-solid equilibrium pressure Pm, supersolid behavior is due to the superfluidity of grain boundaries in solid helium [1]. After describing this experiment and reviewing some of the related theoretical work [2], we discuss the possibility that , at larger pressure (P > Pm), grain boundaries could also explain the supersolid behavior which was observed with torsional oscillators [3-6]. [1] S. Sasaki, R. Ishiguro, F. Caupin, H.J. Maris, and S. Balibar, Science 313, 1098 (2006)[2] E. Burovski, E. Kozik, A. Kuklov, N. Prokof'ev, and B. Svistunov, Phys. Rev. Lett. 94, 165301 (2005)[3] E. Kim and M.H. Chan, Nature 427, 225 (2004)[4] E. Kim and M.H. Chan, Science 305, 1941 (2004)[5] A.S.C. Rittner and J.D. Reppy, Phys. Rev. Lett. 97, 165301 (2006)[6] K. Shirahama, Bull. Am. Phys. Soc. 51, 302 (2006)

  12. Fermionic Casimir effect with helix boundary condition

    NASA Astrophysics Data System (ADS)

    Zhai, Xiang-hua; Li, Xin-zhou; Feng, Chao-Jun

    2011-05-01

    In this paper, we consider the fermionic Casimir effect under a new type of space-time topology using the concept of quotient topology. The relation between the new topology and that in Feng and Li (Phys. Lett. B 691:167, 2010), Zhai et al. (Mod. Phys. Lett. A 26:669, 2011) is something like that between a Möbius strip and a cylindric. We obtain the exact results of the Casimir energy and force for the massless and massive Dirac fields in the ( D+1)-dimensional space-time. For both massless and massive cases, there is a Z 2 symmetry for the Casimir energy. To see the effect of the mass, we compare the result with that of the massless one and we found that the Casimir force approaches the result of the force in the massless case when the mass tends to zero and vanishes when the mass tends to infinity.

  13. Rotary molecular motion at the nanoscale: motors, propellers, wheels

    NASA Astrophysics Data System (ADS)

    Vukovic, Lela; Wang, Boyang; Kral, Petr

    2009-03-01

    We describe by molecular dynamics simulations nanoscale systems that could realize rotary motion. First, we study molecular propellers formed by carbon nanotube rotors with attached aromatic blades [1]. We show that these propellers could pump different types of liquids, and their pumping efficiency strongly depends on the chemistry of the (hydrophobic or hydrophilic) liquid-blade interface. We also investigate nanoscopic wheels with hydrophobic surfaces that show rolling activity on water when driven. Finally, we model efficient molecular motors driven by electron tunneling, which could drive rotary molecular systems [2]. [3pt] [1] B. Wang and P. Kr'al, . Rev. Lett. 98, 266102 (2007).[0pt] [2] B. Wang, L. Vukovic and P. Kr'al, Phys. Rev. Lett. 101, 186808 (2008).

  14. Extended Coherence Time on the Clock Transition of Optically Trapped Rubidium

    NASA Astrophysics Data System (ADS)

    Kleine Büning, G.; Will, J.; Ertmer, W.; Rasel, E.; Arlt, J.; Klempt, C.; Ramirez-Martinez, F.; Piéchon, F.; Rosenbusch, P.

    2011-06-01

    Optically trapped ensembles are of crucial importance for frequency measurements and quantum memories but generally suffer from strong dephasing due to inhomogeneous density and light shifts. We demonstrate a drastic increase of the coherence time to 21 s on the magnetic field insensitive clock transition of Rb87 by applying the recently discovered spin self-rephasing [C. Deutsch , Phys. Rev. Lett. 105, 020401 (2010)PRLTAO0031-900710.1103/PhysRevLett.105.020401]. This result confirms the general nature of this new mechanism and thus shows its applicability in atom clocks and quantum memories. A systematic investigation of all relevant frequency shifts and noise contributions yields a stability of 2.4×10-11τ-1/2, where τ is the integration time in seconds. Based on a set of technical improvements, the presented frequency standard is predicted to rival the stability of microwave fountain clocks in a potentially much more compact setup.

  15. Stationary three-dimensional entanglement via dissipative Rydberg pumping

    NASA Astrophysics Data System (ADS)

    Shao, Xiao-Qiang; You, Jia-Bin; Zheng, Tai-Yu; Oh, C. H.; Zhang, Shou

    2014-05-01

    We extend the recent result of a bipartite Bell singlet [A. W. Carr and M. Saffman, Phys. Rev. Lett. 111, 033607 (2013), 10.1103/PhysRevLett.111.033607] to a stationary three-dimensional entanglement between two-individual neutral Rydberg atoms. This proposal makes full use of the coherent dynamics provided by a Rydberg-mediated interaction and the dissipative factor originating from the spontaneous emission of a Rydberg state. The numerical simulation of the master equation reveals that both the target state negativity N (ρ̂∞) and fidelity F (ρ̂∞) can exceed 99.90%. Furthermore, a steady three-atom singlet state |S3> is also achievable based on the same mechanism.

  16. Simplified scheme for entanglement preparation with Rydberg pumping via dissipation

    NASA Astrophysics Data System (ADS)

    Su, Shi-Lei; Guo, Qi; Wang, Hong-Fu; Zhang, Shou

    2015-08-01

    Inspired by recent work [Carr and Saffman, Phys. Rev. Lett. 111, 033607 (2013), 10.1103/PhysRevLett.111.033607], we propose a simplified scheme to prepare the two-atom maximally entangled states via dissipative Rydberg pumping. Compared with the former scheme, the simplified one involves fewer classical laser fields and Rydberg interactions, and the asymmetric Rydberg interactions are avoided. Master equation simulations demonstrate that the fidelity and the Clauser-Horne-Shimony-Holt correlation of the maximally entangled state could reach up to 0.999 and 2.821, respectively, under certain conditions. Furthermore, we extend the physical thoughts to prepare the three-dimensional entangled state, and the numerical simulations show that, in theory, both the fidelity and the negativity of the desired entanglement could be very close to unity under certain conditions.

  17. Landau-like states in neutral particles

    NASA Astrophysics Data System (ADS)

    Banerjee, Saikat; Ågren, Hans; Balatsky, A. V.

    2016-06-01

    We show the emergence of a new type of dispersion relation for neutral atoms with an interesting similarity to the spectrum of two-dimensional electrons in an applied perpendicular constant magnetic field. These neutral atoms can be confined in toroidal optical traps and give quasi-Landau spectra. In strong contrast to the equidistant infinitely degenerate Landau levels for charged particles, the spectral gap for such two-dimensional neutral particles increases in particular electric-field configurations. The idea in the paper is motivated by the development in cold atom experiments and builds on the seminal paper of Aharonov and Casher [Phys. Rev. Lett. 53, 319 (1984), 10.1103/PhysRevLett.53.319].

  18. Dewetting of thin-film polymers.

    PubMed

    Saulnier, F; Raphaël, E; De Gennes, P-G

    2002-12-01

    In this paper we present a theoretical model for the dewetting of ultrathin polymer films. Assuming that the shear-thinning properties of these films can be described by a Cross-type constitutive equation, we analyze the front morphology of the dewetting film, and characterize the time evolution of the dry region radius, and of the rim height. Different regimes of growth are expected, depending on the initial film thickness, and on the power-law index involved in the constitutive equation. In the thin-films regime, the dry radius and the rim height obey power-law time dependences. We then compare our predictions with the experimental results obtained by Debrégeas et al. [Phys. Rev. Lett. 75, 3886 (1995)] and by Reiter [Phys. Rev. Lett. 87, 186101 (2001)].

  19. Particle path through a nested Mach-Zehnder interferometer

    NASA Astrophysics Data System (ADS)

    Griffiths, Robert B.

    2016-09-01

    Possible paths of a photon passing through a nested Mach-Zehnder interferometer on its way to a detector are analyzed using the consistent histories formulation of quantum mechanics, and confirmed using a set of weak measurements (but not weak values). The results disagree with an analysis by Vaidman [Phys. Rev. A 87, 052104 (2013), 10.1103/PhysRevA.87.052104], and agree with a conclusion reached by Li et al. [Phys. Rev. A 88, 046102 (2013), 10.1103/PhysRevA.88.046102]. However, the analysis casts serious doubt on the claim of Salih et al. (whose authorship includes Li et al.) [Phys. Rev. Lett. 110, 170502 (2013), 10.1103/PhysRevLett.110.170502] to have constructed a protocol for counterfactual communication: a channel which can transmit information even though it contains a negligible number of photons.

  20. Tests of quantum-gravity-induced nonlocality via optomechanical experiments

    NASA Astrophysics Data System (ADS)

    Belenchia, Alessio; Benincasa, Dionigi M. T.; Liberati, Stefano; Marin, Francesco; Marino, Francesco; Ortolan, Antonello

    2017-01-01

    The nonrelativistic limit of nonlocal modifications to the Klein-Gordon operator is studied, and the experimental possibilities of casting stringent constraints on the nonlocality scale via planned and/or current optomechanical experiments are discussed. Details of the perturbative analysis and semianalytical simulations leading to the dynamic evolution of a quantum harmonic oscillator in the presence of nonlocality reported in [A. Belenchia, D. M. T. Benincasa, S. Liberati, F. Marin, F. Marino, and A. Ortolan, Phys. Rev. Lett. 116, 161303 (2016), 10.1103/PhysRevLett.116.161303] are given, together with a comprehensive account of the experimental methodology with particular regard to sensitivity limitations related to thermal decoherence time and active cooling of the oscillator. Finally, a strategy for detecting nonlocality scales of the order of 10-22÷10-26 m by means of the spontaneous time-periodic squeezing of quantum-coherent states is provided.

  1. Measuring the heat exchange of a quantum process.

    PubMed

    Goold, John; Poschinger, Ulrich; Modi, Kavan

    2014-08-01

    Very recently, interferometric methods have been proposed to measure the full statistics of work performed on a driven quantum system [Dorner et al., Phys. Rev. Lett. 110, 230601 (2013) and Mazzola et al., Phys. Rev. Lett. 110, 230602 (2013)]. The advantage of such schemes is that they replace the necessity to make projective measurements by performing phase estimation on an appropriately coupled ancilla qubit. These proposals are one possible route to the tangible experimental exploration of quantum thermodynamics, a subject which is the center of much current attention due to the current control of mesoscopic quantum systems. In this Rapid Communication we demonstrate that a modification of the phase estimation protocols can be used in order to measure the heat distribution of a quantum process. In addition, we demonstrate how our scheme maybe implemented using ion trap technology. Our scheme should pave the way for experimental explorations of the Landauer principle and hence the intricate energy to information conversion in mesoscopic quantum systems.

  2. Spontaneous Motility of Actin Lamellar Fragments

    NASA Astrophysics Data System (ADS)

    Blanch-Mercader, C.; Casademunt, J.

    2013-02-01

    We show that actin lamellar fragments driven solely by polymerization forces at the bounding membrane are generically motile when the circular symmetry is spontaneously broken, with no need of molecular motors or global polarization. We base our study on a nonlinear analysis of a recently introduced minimal model [Callan-Jones et al., Phys. Rev. Lett. 100, 258106 (2008)PRLTAO0031-900710.1103/PhysRevLett.100.258106]. We prove the nonlinear instability of the center of mass and find an exact and simple relation between shape and center-of-mass velocity. A complex subcritical bifurcation scenario into traveling solutions is unfolded, where finite velocities appear through a nonadiabatic mechanism. Examples of traveling solutions and their stability are studied numerically.

  3. Qualitative modifications and new dynamic phases in the phase diagram of one-dimensional superconducting wires driven with electric currents

    NASA Astrophysics Data System (ADS)

    Kallush, Shimshon; Berger, Jorge

    2014-06-01

    After an initial transient period, the conduction regime in a one-dimensional superconducting wire that carries a fixed current is either normal, periodic, or stationary. The phase diagram for these possibilities was studied in Phys. Rev. Lett. 99, 167003 (2007), 10.1103/PhysRevLett.99.167003 for particular values of the length and the material parameters. We have extended this study to arbitrary length and to a range of material parameters that includes realistic values. Variation of the length leads to scaling laws for the phase diagram. Variation of the material parameters leads to new qualitative features and new phases, including a parameter region in which all three regimes are possible.

  4. Resistance of a single domain wall in (Co/Pt)7 multilayer nanowires.

    PubMed

    Hassel, C; Brands, M; Lo, F Y; Wieck, A D; Dumpich, G

    2006-12-01

    Single (Co/Pt)_{7} multilayer nanowires prepared by electron beam lithography with perpendicular magnetic anisotropy are locally modified by means of Ga-ion implantation generating 180 degrees domain walls which are pinned at the edges of underlying thin Pt wires. Since we can exclude contributions from the anisotropic and the Lorentz magnetoresistance this allows us to determine the resistance of a single domain wall at room temperature. We find a positive relative resistance increase of DeltaR/R=1.8% inside the domain wall which agrees well with the model of Levy and Zhang [Phys. Rev. Lett. 79, 5110 (1997)10.1103/PhysRevLett.79.5110].

  5. Attaining subclassical metrology in lossy systems with entangled coherent states

    NASA Astrophysics Data System (ADS)

    Knott, P. A.; Munro, W. J.; Dunningham, J. A.

    2014-05-01

    Quantum mechanics allows entanglement enhanced measurements to be performed, but loss remains an obstacle in constructing realistic quantum metrology schemes. However, recent work has revealed that entangled coherent states (ECSs) have the potential to perform robust subclassical measurements [J. Joo et al., Phys. Rev. Lett. 107, 083601 (2011), 10.1103/PhysRevLett.107.083601]. Up to now no read-out scheme has been devised that exploits this robust nature of ECSs, but we present here an experimentally accessible method of achieving precision close to the theoretical bound, even with loss. We show substantial improvements over unentangled classical states and highly entangled NOON states for a wide range of loss values, elevating quantum metrology to a realizable technology in the near future.

  6. Temperature-dependent mechanisms of homogeneous crystal nucleation in quenced Lennard-Jones liquids

    SciTech Connect

    Peng, L.; Morris, James R; Lo, Y. C.

    2008-01-01

    We have observed homogeneous crystal nucleation in Lennard-Jones liquid by molecular dynamics simulations. A clear nucleation time delay has been observed at T=0.677T{sub m} and T=0.629T{sub m} indicating the presence of a barrier, in contrast to recent reports [Trudu et al., Phys. Rev. Lett. 97, 105701 (2006)]. The structure of nuclei observed in the previous results and in the present work is evidence of transient-time dominated nucleation, not of a spinodal. Very rapid nucleation is observed at T=0.484T{sub m}, indicating either a low (but finite) barrier or possibly a spinodal transformation. No spinodal effect has been observed in similar simulations of crystal nucleation in aluminum at any temperature [Aga et al., Phys. Rev. Lett. 96, 245701 (2006)], suggesting that different qualitative behaviors may be possible in what would seem to be similar potentials.

  7. Evidence for nanoparticles in microwave-generated fireballs observed by synchrotron x-ray scattering.

    PubMed

    Mitchell, J B A; LeGarrec, J L; Sztucki, M; Narayanan, T; Dikhtyar, V; Jerby, E

    2008-02-15

    The small-angle x-ray scattering method has been applied to study fireballs ejected into the air from molten hot spots in borosilicate glass by localized microwaves [V. Dikhtyar and E. Jerby, Phys. Rev. Lett. 96 045002 (2006)10.1103/PhysRevLett.96.045002]. The fireball's particle size distribution, density, and decay rate in atmospheric pressure were measured. The results show that the fireballs contain particles with a mean size of approximately 50 nm with average number densities on the order of approximately 10(9). Hence, fireballs can be considered as a dusty plasma which consists of an ensemble of charged nanoparticles in the plasma volume. This finding is likened to the ball-lightning phenomenon explained by the formation of an oxidizing particle network liberated by lightning striking the ground [J. Abrahamson and J. Dinniss, Nature (London) 403, 519 (2000)10.1038/35000525].

  8. Controlling the optical bistability in a multi-level atomic system via similar parameters of quantum well nanostructure

    SciTech Connect

    Jafarzadeh, H.

    2015-04-28

    The spontaneously generated coherence (SGC) effects on optical bistability (OB) are investigated in a five-level K-type system. It is found that SGC makes the system phase dependent. Thus, the OB and the absorption behavior of the system can be controlled by the relation phase of applied fields. In addition, the pump field intensity effect on the OB behavior is discussed. The experimental viability of the model in semiconductor quantum well system is also discussed [A. V. Germanenko et al., J. Phys.: Conf. Ser. 376, 012024 (2012); D. S. Chemla et al., IEEE J. Quantum Electron. 20(3), 265 (1984); L. V. Butov et al., J. Exp. Theor. Phys. 88(5), 1036 (1999); J. F. Dynes et al., Phys. Rev. Lett. 94, 157403 (2005); S. Schmitt-Rinka et al., Adv. Phys. 38(2), 89 (1989); and H. W. Liu et al., Appl. Phys. Lett. 54, 2082 (1989)].

  9. Quantum correlations of identical particles subject to classical environmental noise

    NASA Astrophysics Data System (ADS)

    Beggi, Andrea; Buscemi, Fabrizio; Bordone, Paolo

    2016-09-01

    In this work, we propose a measure for the quantum discord of indistinguishable particles, based on the definition of entanglement of particles given in Wiseman and Vaccaro (Phys Rev Lett 91:097902, 2003. doi: 10.1103/PhysRevLett.91.097902). This discord of particles is then used to evaluate the quantum correlations in a system of two identical bosons (fermions), where the particles perform a quantum random walk described by the Hubbard Hamiltonian in a 1D lattice. The dynamics of the particles is either unperturbed or subject to a classical environmental noise—such as random telegraph, pink or brown noise. The observed results are consistent with those for the entanglement of particles, and we observe that on-site interaction between particles have an important protective effect on correlations against the decoherence of the system.

  10. Parameter Space of Fixed Points of the Damped Driven Pendulum Susceptible to Control of Chaos Algorithms

    NASA Astrophysics Data System (ADS)

    Dittmore, Andrew; Trail, Collin; Olsen, Thomas; Wiener, Richard J.

    2003-11-01

    We have previously demonstrated the experimental control of chaos in a Modified Taylor-Couette system with hourglass geometry( Richard J. Wiener et al), Phys. Rev. Lett. 83, 2340 (1999).. Identifying fixed points susceptible to algorithms for the control of chaos is key. We seek to learn about this process in the accessible numerical model of the damped, driven pendulum. Following Baker(Gregory L. Baker, Am. J. Phys. 63), 832 (1995)., we seek points susceptible to the OGY(E. Ott, C. Grebogi, and J. A. Yorke, Phys. Rev. Lett. 64), 1196 (1990). algorithm. We automate the search for fixed points that are candidates for control. We present comparisons of the space of candidate fixed points with the bifurcation diagrams and Poincare sections of the system. We demonstrate control at fixed points which do not appear on the attractor. We also show that the control algorithm may be employed to shift the system between non-communicating branches of the attractor.

  11. Separability of a mixture of Dicke states

    NASA Astrophysics Data System (ADS)

    Yu, Nengkun

    2016-12-01

    The structural relation between multipartite entanglement and symmetry is one of the central mysteries of quantum mechanics. In this paper, we study the separability of quantum states in the bosonic system. We show that a mixture of multiqubit Dicke states is separable if and only if its partial transpose is positive semidefinite, which confirms the hypothesis of Wolfe and Yelin [E. Wolfe and S. F. Yelin, Phys. Rev. Lett. 112, 140402 (2014), 10.1103/PhysRevLett.112.140402]. We generalize this result to a class of bosonic states in the d ⊗d system; and for general d , we determine its separability is NP-hard although verifiable conditions for separability are easily derived when d =3 ,4 .

  12. A coarse-grained DNA model for the prediction of current signals in DNA translocation experiments

    NASA Astrophysics Data System (ADS)

    Weik, Florian; Kesselheim, Stefan; Holm, Christian

    2016-11-01

    We present an implicit solvent coarse-grained double-stranded DNA (dsDNA) model confined to an infinite cylindrical pore that reproduces the experimentally observed current modulations of a KaCl solution at various concentrations. Our model extends previous coarse-grained and mean-field approaches by incorporating a position dependent friction term on the ions, which Kesselheim et al. [Phys. Rev. Lett. 112, 018101 (2014)] identified as an essential ingredient to correctly reproduce the experimental data of Smeets et al. [Nano Lett. 6, 89 (2006)]. Our approach reduces the computational effort by orders of magnitude compared with all-atom simulations and serves as a promising starting point for modeling the entire translocation process of dsDNA. We achieve a consistent description of the system's electrokinetics by using explicitly parameterized ions, a friction term between the DNA beads and the ions, and a lattice-Boltzmann model for the solvent.

  13. Blob dynamics in TORPEX poloidal null configurations

    NASA Astrophysics Data System (ADS)

    Shanahan, B. W.; Dudson, B. D.

    2016-12-01

    3D blob dynamics are simulated in X-point magnetic configurations in the TORPEX device via a non-field-aligned coordinate system, using an isothermal model which evolves density, vorticity, parallel velocity and parallel current density. By modifying the parallel gradient operator to include perpendicular perturbations from poloidal field coils, numerical singularities associated with field aligned coordinates are avoided. A comparison with a previously developed analytical model (Avino 2016 Phys. Rev. Lett. 116 105001) is performed and an agreement is found with minimal modification. Experimental comparison determines that the null region can cause an acceleration of filaments due to increasing connection length, but this acceleration is small relative to other effects, which we quantify. Experimental measurements (Avino 2016 Phys. Rev. Lett. 116 105001) are reproduced, and the dominant acceleration mechanism is identified as that of a developing dipole in a moving background. Contributions from increasing connection length close to the null point are a small correction.

  14. Thermodynamic and Kinetic Properties of Shocks in Two-Dimensional Yukawa Systems

    NASA Astrophysics Data System (ADS)

    Marciante, M.; Murillo, M. S.

    2017-01-01

    Particle-level simulations of shocked plasmas are carried out to examine kinetic properties not captured by hydrodynamic models. In particular, molecular dynamics simulations of 2D Yukawa plasmas with variable couplings and screening lengths are used to examine shock features unique to plasmas, including the presence of dispersive shock structures for weak shocks. A phase-space analysis reveals several kinetic properties, including anisotropic velocity distributions, non-Maxwellian tails, and the presence of fast particles ahead of the shock, even for moderately low Mach numbers. We also examine the thermodynamics (Rankine-Hugoniot relations) of recent experiments [Phys. Rev. Lett. 111, 015002 (2013), 10.1103/PhysRevLett.111.015002] and find no anomalies in their equations of state.

  15. Ab Initio Quantum Monte Carlo Simulation of the Warm Dense Electron Gas in the Thermodynamic Limit

    DOE PAGES

    Dornheim, Tobias; Groth, Simon; Sjostrom, Travis; ...

    2016-10-07

    Here we perform ab initio quantum Monte Carlo (QMC) simulations of the warm dense uniform electron gas in the thermodynamic limit. By combining QMC data with the linear response theory, we are able to remove finite-size errors from the potential energy over the substantial parts of the warm dense regime, overcoming the deficiencies of the existing finite-size corrections by Brown et al. [Phys. Rev. Lett. 110, 146405 (2013)]. Extensive new QMC results for up to N = 1000 electrons enable us to compute the potential energy V and the exchange-correlation free energy F xc of the macroscopic electron gas withmore » an unprecedented accuracy of | Δ V | / | V | , | Δ Fxc | / | F | xc ~ 10 $-$3. Finally, a comparison of our new data to the recent parametrization of F xc by Karasiev et al. [Phys. Rev. Lett. 112, 076403 (2014)] reveals significant deviations to the latter.« less

  16. Vortices in a toroidal Bose-Einstein condensate with a rotating weak link

    NASA Astrophysics Data System (ADS)

    Yakimenko, A. I.; Bidasyuk, Y. M.; Weyrauch, M.; Kuriatnikov, Y. I.; Vilchinskii, S. I.

    2015-03-01

    Motivated by a recent experiment [K. C. Wright et al., Phys. Rev. Lett. 110, 025302 (2013), 10.1103/PhysRevLett.110.025302], we investigate deterministic discontinuous jumps between quantized circulation states in a toroidally trapped Bose-Einstein condensate. These phase slips are induced by vortex excitations created by a rotating weak link. We analyze the influence of a localized condensate density depletion and atomic superflows, governed by the rotating barrier, on the energetic and dynamical stability of the vortices in the ring-shaped condensate. We simulate in a three-dimensional dissipative mean-field model the dynamics of the condensate using parameters similar to the experimental conditions. Moreover, we consider the dynamics of the stirred condensate far beyond the experimentally explored region and reveal surprising manifestations of complex vortex dynamics.

  17. Melting transition of near-monolayer xenon films on graphite: A computer simulation study. II.

    NASA Astrophysics Data System (ADS)

    Abraham, Farid F.

    1984-03-01

    Xenon films of greater than one monolayer thickness are simulated using the molecular-dynamics technique. If the total substrate area and coverage are held constant, we find that the first layer of the xenon film melts in an apparent continuous manner over a small temperature interval and is consistent with two-phase, solid-liquid coexistence. The quantitative features of the correlation functions are in excellent agreement with recent x-ray experiments [P. A. Heiney et al.,

    Phys. Rev. Lett. 48, 104 (1982)
    T. F. Rosenbaum et al.,
    Phys. Rev. Lett. 50, 1791 (1983)
    ]. If the spreading pressure and total coverage are held constant, we find that the melting transition is first order. This is in conflict with the conclusions of Heiney et al. based on constant-chemical-potential experiments but is consistent with the constant-area and -coverage simulation. A possible explanation is proposed.

  18. A simplified implementation of van der Waals density functionals for first-principles molecular dynamics applications

    NASA Astrophysics Data System (ADS)

    Wu, Jun; Gygi, François

    2012-06-01

    We present a simplified implementation of the non-local van der Waals correlation functional introduced by Dion et al. [Phys. Rev. Lett. 92, 246401 (2004)] and reformulated by Román-Pérez et al. [Phys. Rev. Lett. 103, 096102 (2009)]. The proposed numerical approach removes the logarithmic singularity of the kernel function. Complete expressions of the self-consistent correlation potential and of the stress tensor are given. Combined with various choices of exchange functionals, five versions of van der Waals density functionals are implemented. Applications to the computation of the interaction energy of the benzene-water complex and to the computation of the equilibrium cell parameters of the benzene crystal are presented. As an example of crystal structure calculation involving a mixture of hydrogen bonding and dispersion interactions, we compute the equilibrium structure of two polymorphs of aspirin (2-acetoxybenzoic acid, C9H8O4) in the P21/c monoclinic structure.

  19. Extension of the invariant environment refinement technique + reverse Monte Carlo method of structural modelling for interpreting experimental structure factors: The cases of amorphous silicon, phosphorus, and liquid argon

    NASA Astrophysics Data System (ADS)

    Gereben, Orsolya; Pusztai, László

    2011-08-01

    The invariant environment refinement technique, as applied to reverse Monte Carlo modelling [invariant environment refinement technique + reverse Monte Carlo (INVERT + RMC); M. J. Cliffe, M. T. Dove, D. A. Drabold, and A. L. Goodwin, Phys. Rev. Lett. 104, 125501 (2010), 10.1103/PhysRevLett.104.125501], is extended so that it is now applicable for interpreting the structure factor (instead of the pair distribution function). The new algorithm, called the local invariance calculation, is presented by the examples of amorphous silicon, phosphorus, and liquid argon. As a measure of the effectiveness of the new algorithm, the ratio of exactly fourfold coordinated Si atoms was larger than obtained previously by the INVERT-RMC scheme.

  20. Qubit teleportation and transfer across antiferromagnetic spin chains.

    PubMed

    Campos Venuti, L; Degli Esposti Boschi, C; Roncaglia, M

    2007-08-10

    We explore the capability of spin-1/2 chains to act as quantum channels for both teleportation and transfer of qubits. Exploiting the emergence of long-distance entanglement in low-dimensional systems [Phys. Rev. Lett. 96, 247206 (2006)10.1103/Phys.Rev.Lett.96, 247206(2006)], here we show how to obtain high communication fidelities between distant parties. An investigation of protocols of teleportation and state transfer is presented, in the realistic situation where temperature is included. Basing our setup on antiferromagnetic rotationally invariant systems, both protocols are represented by pure depolarizing channels. We propose a scheme where channel fidelity close to 1 can be achieved on very long chains at moderately small temperature.

  1. Quantum teleportation with continuous measurements

    NASA Astrophysics Data System (ADS)

    Greplova, Eliska; Mølmer, Klaus; Andersen, Christian Kraglund

    2016-10-01

    We propose a scheme for quantum teleportation between two qubits, coupled sequentially to a cavity field. An implementation of the scheme is analyzed with superconducting qubits and a transmission line resonator, where measurements are restricted to continuous probing of the field leaking from the resonator rather than instantaneous projective Bell state measurement. We show that the past quantum state formalism S. Gammelmark, B. Julsgaard, and K. Mølmer, Phys. Rev. Lett. 111, 160401 (2013), 10.1103/PhysRevLett.111.160401 can be successfully applied to estimate what would have been the most likely Bell measurement outcome conditioned on our continuous signal record. This information determines which local operation on the target qubit yields the optimal teleportation fidelity. Our results emphasize the significance of applying a detailed analysis of quantum measurements in feedforward protocols in nonideal leaky quantum systems.

  2. Characterization of the hairpin vortex solution in plane Couette flow

    NASA Astrophysics Data System (ADS)

    Generalis, Sotos C.; Itano, Tomoaki

    2010-12-01

    Quantitative evidence that establishes the existence of the hairpin vortex state (HVS) [T. Itano and S. C. Generalis, Phys. Rev. Lett. 102, 114501 (2009)10.1103/PhysRevLett.102.114501] in plane Couette flow (PCF) is provided in this work. The evidence presented in this paper shows that the HVS can be obtained via homotopy from a flow with a simple geometrical configuration, namely, the laterally heated flow (LHF). Although the early stages of bifurcations of LHF have been previously investigated, our linear stability analysis reveals that the root in the LHF yields multiple branches via symmetry breaking. These branches connect to the PCF manifold as steady nonlinear amplitude solutions. Moreover, we show that the HVS has a direct bifurcation route to the Rayleigh-Bénard convection.

  3. Exact Time-Dependent Exchange-Correlation Potential for a 2-Electron System

    NASA Astrophysics Data System (ADS)

    D'Amico, Irene; Vignale, Giovanni

    1998-03-01

    We present an exact solution for the Floquet state evolving from the ground state of a 2-electron system confined in a plane by an isotropic parabolic potential whose curvature is periodically modulated in time. >From this solution we extract the exact frequency-dependent exchange correlation potential V_xc which, when used in the time-dependent Kohn-Sham equation (in addition to external and Hartree potentials) generates the exact time-dependent density. The exact V_xc is compared with the V_xc's obtained from the adiabatic local density approximation and from the retarded local current-density approximation (G. Vignale and W. Kohn, Phys. Rev. Lett. 77), 2037 (1996); G. Vignale, C. Ullrich, and S. Conti, Phys. Rev. Lett. 79 (1997)..

  4. Ground state of the hydrogen molecule in a strong magnetic field

    NASA Astrophysics Data System (ADS)

    Kravchenko, Yu. P.; Liberman, M. A.

    1997-10-01

    The ground state of a hydrogen molecule in magnetic fields is investigated using a fully numerical Hartree-Fock approach. We found that between 4.2×104 T and 3×106 T the ground state is 3Σ+u with very weak interaction between atoms. In this field region the hydrogen can form a superfluid phase, predicted earlier [Korolev and Liberman, Phys. Rev. Lett. 72, 270 (1994)]; the state 3Πu is metastable and may be responsible for the unknown excitonic line observed by Timofeev and Chernenko [JETP Lett. 61, 617 (1995)]. For magnetic fields stronger than 3×106 T the ground state is the tightly bound 3Πu.

  5. Analysis of non-Markovian coupling of a lattice-trapped atom to free space

    NASA Astrophysics Data System (ADS)

    Stewart, Michael; Krinner, Ludwig; Pazmiño, Arturo; Schneble, Dominik

    2017-01-01

    Behavior analogous to that of spontaneous emission in photonic band-gap materials has been predicted for an atom-optical system consisting of an atom confined in a well of a state-dependent optical lattice that is coupled to free space through an internal-state transition [de Vega et al., Phys. Rev. Lett. 101, 260404 (2008), 10.1103/PhysRevLett.101.260404]. Using the Weisskopf-Wigner approach and considering a one-dimensional geometry, we analyze the properties of this system in detail, including the evolution of the lattice-trapped population, the momentum distribution of emitted matter waves, and the detailed structure of an evanescent matter-wave state below the continuum boundary. We compare and contrast our findings for the transition from Markovian to non-Markovian behaviors to those previously obtained for three dimensions.

  6. Generalized James' effective Hamiltonian method

    NASA Astrophysics Data System (ADS)

    Shao, Wenjun; Wu, Chunfeng; Feng, Xun-Li

    2017-03-01

    James' effective Hamiltonian method has been extensively adopted to investigate largely detuned interacting quantum systems. This method only corresponds to the second-order perturbation theory and cannot be exploited to treat problems which should be solved by using the third- or higher-order perturbation theory. In this paper, we generalize James' effective Hamiltonian method to the higher-order case. Using the method developed here, we reexamine two recently published examples [L. Garziano et al., Phys. Rev. Lett. 117, 043601 (2016), 10.1103/PhysRevLett.117.043601; Ken K. W. Ma and C. K. Law, Phys. Rev. A 92, 023842 (2015), 10.1103/PhysRevA.92.023842]; our results turn out to be the same as the original ones derived from the third-order perturbation theory and adiabatic elimination method, respectively. For some specific problems, this method can simplify the calculating procedure and the resultant effective Hamiltonian is more general.

  7. Reversible Heating in Electric Double Layer Capacitors

    NASA Astrophysics Data System (ADS)

    Janssen, Mathijs; van Roij, René

    2017-03-01

    A detailed comparison is made between different viewpoints on reversible heating in electric double layer capacitors. We show in the limit of slow charging that a combined Poisson-Nernst-Planck and heat equation, first studied by d'Entremont and Pilon [J. Power Sources 246, 887 (2014), 10.1016/j.jpowsour.2013.08.024], recovers the temperature changes as predicted by the thermodynamic identity of Janssen et al. [Phys. Rev. Lett. 113, 268501 (2014), 10.1103/PhysRevLett.113.268501], and disagrees with the approximative model of Schiffer et al. [J. Power Sources 160, 765 (2006), 10.1016/j.jpowsour.2005.12.070] that predominates the literature. The thermal response to the adiabatic charging of supercapacitors contains information on electric double layer formation that has remained largely unexplored.

  8. Probing resonances in the Dirac equation with quadrupole-deformed potentials with the complex momentum representation method

    NASA Astrophysics Data System (ADS)

    Fang, Zhi; Shi, Min; Guo, Jian-You; Niu, Zhong-Ming; Liang, Haozhao; Zhang, Shi-Sheng

    2017-02-01

    Resonances play critical roles in the formation of many physical phenomena, and many techniques have been developed for the exploration of resonances. In a recent letter [Phys. Rev. Lett. 117, 062502 (2016), 10.1103/PhysRevLett.117.062502], we proposed a new method for probing single-particle resonances by solving the Dirac equation in complex momentum representation for spherical nuclei. Here, we develop the theoretical formalism of this method for deformed nuclei. We elaborate numerical details and calculate the bound and resonant states in 37Mg. The results are compared with those from the coordinate representation calculations with a satisfactory agreement. In particular, the present method can expose clearly the resonant states in a complex momentum plane and determine precisely the resonance parameters for not only narrow resonances but also broad resonances that were difficult to obtain before.

  9. Activation of monogamy in nonlocality using local contextuality

    NASA Astrophysics Data System (ADS)

    Saha, Debashis; Ramanathan, Ravishankar

    2017-03-01

    A unified view of the phenomenon of monogamy exhibited by Bell inequalities and noncontextuality inequalities arising from the no-signaling and no-disturbance principles is presented using the graph-theoretic method introduced by Ramanathan et al. [Phys. Rev. Lett. 109, 050404 (2012), 10.1103/PhysRevLett.109.050404]. We propose a hitherto unexplored tradeoff relation, namely, Bell inequalities that do not exhibit monogamy features of their own can be activated to be monogamous by the addition of a local contextuality term. This is illustrated by means of the well-known I3322 inequality and reveals a resource trade-off between bipartite correlations and the local purity of a single system. In the derivation of no-signaling monogamies, we uncover a unique feature, namely, that two-party Bell expressions that are trivially classically saturated can become nontrivial upon the addition of an expression involving a third party with a single measurement input.

  10. Quasiparticle Approach to Molecules Interacting with Quantum Solvents

    NASA Astrophysics Data System (ADS)

    Lemeshko, Mikhail

    2017-03-01

    Understanding the behavior of molecules interacting with superfluid helium represents a formidable challenge and, in general, requires approaches relying on large-scale numerical simulations. Here, we demonstrate that experimental data collected over the last 20 years provide evidence that molecules immersed in superfluid helium form recently predicted angulon quasiparticles [Phys. Rev. Lett. 114, 203001 (2015), 10.1103/PhysRevLett.114.203001]. Most important, casting the many-body problem in terms of angulons amounts to a drastic simplification and yields effective molecular moments of inertia as straightforward analytic solutions of a simple microscopic Hamiltonian. The outcome of the angulon theory is in good agreement with experiment for a broad range of molecular impurities, from heavy to medium-mass to light species. These results pave the way to understanding molecular rotation in liquid and crystalline phases in terms of the angulon quasiparticle.

  11. One spatial dimensional finite volume three-body interaction for a short-range potential

    NASA Astrophysics Data System (ADS)

    Guo, Peng

    2017-03-01

    In this work, we use McGuire's model to describe scattering of three spinless identical particles in one spatial dimension; we first present analytic solutions of Faddeev's equation for scattering of three spinless particles in free space. The three particles interaction in finite volume is derived subsequently, and the quantization conditions by matching wave functions in free space and finite volume are presented in terms of two-body scattering phase shifts. The quantization conditions obtained in this work for the short-range interaction are Lüscher's formula-like and consistent with Yang's results [Phys. Rev. Lett. 19, 1312 (1967), 10.1103/PhysRevLett.19.1312].

  12. Theory of phonon-driven spin Seebeck effect

    NASA Astrophysics Data System (ADS)

    Adachi, Hiroto; Ohe, Jun-Ichiro; Takahashi, Saburo; Maekawa, Sadamichi

    2012-02-01

    Spin Seebeck effect refers to a thermal spin injection occurring over millimeter scales from a ferromagnet into an attached nonmagnetic metal [Uchida et al., Nature 455, 778 (2008)]. We discuss the importance of the phonon-drag process in the spin Seebeck effect. Our theory of phonon-drag spin Seebeck effect [Adachi et al., Appl. Phys. Lett. 97, 252506 (2010)] explains simultaneously the local nature of the spin Seebeck effect [Jaworski et al., Nature Materials 9, 898 (2010); Uchida et al., Nature Materials 10, 737 (2011)] and the signal enhancement at low temperatures [Jaworski et al., Phys. Rev. Lett. 106, 186601 (2011)]. We also discuss the difference between our approach and that developed in Xiao et al., Phys. Rev. B 81, 214418 (2010).

  13. Top Quarks Spin Correlations with Graviton in ADD and RS Models at the Large Hadron Collider

    NASA Astrophysics Data System (ADS)

    Arai, Masato; Okada, Nobuchika; Smolek, Karel; Šimák, Vladislav

    2008-03-01

    In LHC physics we study the spin correlation of top-antitop pairs production to investigate the production mechanism of heavy quarks[F. Hubard et al. Eur. Phys. J. C 44 (2006) 13]. The s-channel process mediated by graviton Kaluza-Klein modes in ADD model with several extra dimensions[N. Arkani-Hamed, S. Dimopoulos and G. Dvali, Phys. Lett. 429B (1998) 263, hep-ph/9803315] or in the Randall-Sundrum model with only one extra dimension[L. Randall and R. Sundrum, Phys. Rev. Lett. 83 (1999) 3370 hep-ph/9905221] contribute to the top-antitop pair production and affects the resulting top spin correlations. We calculated the full density matrix for the top-antitop pair production. We find a sizable deviation of the top spin correlations from the Standard.

  14. Shifted-action expansion and applicability of dressed diagrammatic schemes

    NASA Astrophysics Data System (ADS)

    Rossi, Riccardo; Werner, Félix; Prokof'ev, Nikolay; Svistunov, Boris

    2016-04-01

    While bare diagrammatic series are merely Taylor expansions in powers of interaction strength, dressed diagrammatic series, built on fully or partially dressed lines and vertices, are usually constructed by reordering the bare diagrams, which is an a priori unjustified manipulation, and can even lead to convergence to an unphysical result [E. Kozik, M. Ferrero, and A. Georges, Phys. Rev. Lett. 114, 156402 (2015), 10.1103/PhysRevLett.114.156402]. Here we show that for a broad class of partially dressed diagrammatic schemes, there exists an action S(ξ ) depending analytically on an auxiliary complex parameter ξ , such that the Taylor expansion in ξ of correlation functions reproduces the original diagrammatic series. The resulting applicability conditions are similar to the bare case. For fully dressed skeleton diagrammatics, analyticity of S(ξ ) is not granted, and we formulate a sufficient condition for converging to the correct result.

  15. Deformation mechanisms of irradiated metallic nanofoams

    NASA Astrophysics Data System (ADS)

    Zepeda-Ruiz, L. A.; Martinez, E.; Caro, M.; Fu, E. G.; Caro, A.

    2013-07-01

    It was recently proposed that within a particular window in the parameter space of temperature, ion energy, dose rate, and filament diameter, nanoscale metallic foams could show radiation tolerance [Bringa et al., Nano Lett. 12, 3351 (2012)]. Outside this window, damage appears in the form of vacancy-related stacking fault tetrahedra (SFT), with no effects due to interstitials [Fu et al., Appl. Phys. Lett. 101, 191607 (2012)]. These SFT could be natural sources of dislocations within the ligaments composing the foam and determine their mechanical response. We employ molecular dynamics simulations of cylindrical ligaments containing an SFT to obtain an atomic-level picture of their deformation behavior under compression. We find that plastic deformation originates at the edges of the SFT, at lower stress than needed to create dislocations at the surface. Our results predict that nanoscale foams soften under irradiation, a prediction not yet tested experimentally.

  16. A Scalable Implementation of Van der Waals Density Functionals

    NASA Astrophysics Data System (ADS)

    Wu, Jun; Gygi, Francois

    2010-03-01

    Recently developed Van der Waals density functionals[1] offer the promise to account for weak intermolecular interactions that are not described accurately by local exchange-correlation density functionals. In spite of recent progress [2], the computational cost of such calculations remains high. We present a scalable parallel implementation of the functional proposed by Dion et al.[1]. The method is implemented in the Qbox first-principles simulation code (http://eslab.ucdavis.edu/software/qbox). Application to large molecular systems will be presented. [4pt] [1] M. Dion et al. Phys. Rev. Lett. 92, 246401 (2004).[0pt] [2] G. Roman-Perez and J. M. Soler, Phys. Rev. Lett. 103, 096102 (2009).

  17. Nonlocal van der Waals density functional made simple and efficient

    NASA Astrophysics Data System (ADS)

    Sabatini, Riccardo; Gorni, Tommaso; de Gironcoli, Stefano

    2013-01-01

    We present a simple revision of the VV10 nonlocal density functional by Vydrov and Van Voorhis [J. Chem. Phys.JCPSA60021-960610.1063/1.3521275 133, 244103 (2010)] for dispersion interactions. Unlike the original functional our modification allows nonlocal correlation energy and its derivatives to be efficiently evaluated in a plane wave framework along the lines pioneered by Román-Pérez and Soler [Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.103.096102 103, 096102 (2009)]. Our revised functional maintains the outstanding precision of the original VV10 in noncovalently bound complexes and performs well in representative covalent, ionic, and metallic solids.

  18. Classical simulation of infinite-size quantum lattice systems in two spatial dimensions.

    PubMed

    Jordan, J; Orús, R; Vidal, G; Verstraete, F; Cirac, J I

    2008-12-19

    We present an algorithm to simulate two-dimensional quantum lattice systems in the thermodynamic limit. Our approach builds on the projected entangled-pair state algorithm for finite lattice systems [F. Verstraete and J. I. Cirac, arxiv:cond-mat/0407066] and the infinite time-evolving block decimation algorithm for infinite one-dimensional lattice systems [G. Vidal, Phys. Rev. Lett. 98, 070201 (2007)10.1103/PhysRevLett.98.070201]. The present algorithm allows for the computation of the ground state and the simulation of time evolution in infinite two-dimensional systems that are invariant under translations. We demonstrate its performance by obtaining the ground state of the quantum Ising model and analyzing its second order quantum phase transition.

  19. Parity nonconservation in odd isotopes of single trapped atomic ions

    SciTech Connect

    Sahoo, B. K.; Mandal, P.; Mukherjee, M.

    2011-03-15

    We have estimated the size of the light shifts due to parity-nonconservation (PNC) interactions in different isotopes of Ba{sup +} and Ra{sup +} ions based on the work of Fortson [Phys. Rev. Lett. 70, 2383 (1993)]. We have used the nuclear-spin-independent (NSI) amplitudes calculated earlier by us [Phys. Rev. Lett. 96, 163003 (2006); Phys. Rev. A 78, 050501(R) (2008)], and we have employed the third-order many-body perturbation theory [MBPT(3)] in this work to estimate the nuclear-spin-dependent (NSD) amplitudes in these ions. Ra{sup +} is found to be more favorable than Ba{sup +} for measuring both the NSI and NSD PNC observables.

  20. Theoretical description of effective heat transfer between two viscously coupled beads

    NASA Astrophysics Data System (ADS)

    Bérut, A.; Imparato, A.; Petrosyan, A.; Ciliberto, S.

    2016-11-01

    We analytically study the role of nonconservative forces, namely viscous couplings, on the statistical properties of the energy flux between two Brownian particles kept at different temperatures. From the dynamical model describing the system, we identify an energy flow that satisfies a fluctuation theorem both in the stationary and in transient states. In particular, for the specific case of a linear nonconservative interaction, we derive an exact fluctuation theorem that holds for any measurement time in the transient regime, and which involves the energy flux alone. Moreover, in this regime the system presents an interesting asymmetry between the hot and cold particles. The theoretical predictions are in good agreement with the experimental results already presented in our previous article [Imparato et al., Phys. Rev. Lett. 116, 068301 (2016), 10.1103/PhysRevLett.116.068301], where we investigated the thermodynamic properties of two Brownian particles, trapped with optical tweezers, interacting through a dissipative hydrodynamic coupling.

  1. Examination and experimental constraints of the stellar reaction rate factor NA<σv> of the 18Ne(α,p)21Na reaction at temperatures of x-ray bursts

    NASA Astrophysics Data System (ADS)

    Mohr, P.; Matic, A.

    2013-03-01

    The 18Ne(α,p)21Na reaction is one key for the breakout from the hot CNO cycles to the rp-process. Recent papers have provided reaction rate factors NA<σv> which are discrepant by at least one order of magnitude. The compatibility of the latest experimental results is tested, and a partial explanation for the discrepant NA<σv> is given. A new rate factor is derived from the combined analysis of all available data. The new rate factor is located slightly below the higher rate factor found by Matic [Phys. Rev. CPRVCAN0556-281310.1103/PhysRevC.80.055804 80, 055804 (2009)] at low temperatures and significantly below at higher temperatures whereas it is about a factor of 5 higher than the lower rate factor recently published by Salter [Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.108.242701 108, 242701 (2012)].

  2. Conserved nonlocal dynamics and critical behavior of uranium ferromagnetic superconductors

    NASA Astrophysics Data System (ADS)

    Singh, Rohit; Dutta, Kishore; Nandy, Malay K.

    2017-01-01

    A recent theoretical study [Phys. Rev. Lett. 112, 037202 (2014), 10.1103/PhysRevLett.112.037202] has revealed that systems such as uranium ferromagnetic superconductors obey conserved dynamics. To capture the critical behavior near the paramagnetic to ferromagnetic phase transition of these compounds, we study the conserved critical dynamics of a nonlocal Ginzburg-Landau model. A dynamic renormalization-group calculation at one-loop order yields the critical indices in the leading order of ɛ =dc-d , where dc=4 -2 ρ is the upper critical dimension, with ρ an exponent in the nonlocal interaction. The predicted static critical exponents are found to be comparable with the available experimentally observed critical exponents for strongly uniaxial uranium ferromagnetic superconductors. The corresponding dynamic exponent z and linewidth exponent w are found to be z =4 -ρ ɛ /4 +O (ɛ2) and w =1 +ρ +3 ɛ /4 +O (ɛ2) .

  3. Hysteretic resistance spikes in quantum hall ferromagnets without domains.

    PubMed

    Freire, Henrique J P; Egues, J Carlos

    2007-07-13

    We use spin-density-functional theory to study recently reported hysteretic magnetoresistance rho(xx) spikes in Mn-based 2D electron gases [Phys. Rev. Lett. 89, 266802 (2002)10.1103/PhysRevLett.89.266802]. We find hysteresis loops in our calculated Landau fan diagrams and total energies signaling quantum Hall ferromagnet phase transitions. Spin-dependent exchange-correlation effects are crucial to stabilize the relevant magnetic phases arising from distinct symmetry-broken excited- and ground-state solutions of the Kohn-Sham equations. Besides hysteretic spikes in rho(xx), we predict hysteretic dips in the Hall resistance rho(xy). Our theory, without domain walls, satisfactorily explains the recent data.

  4. Characterization of As-Doped p-Type ZnO by X-ray Absorption Near-Edge Structure Spectroscopy: Theory

    SciTech Connect

    Limpijumnong, S.; Smith, M. F.; Zhang, S. B.

    2006-01-01

    Vaithianathan et al. [Appl. Phys. Lett. 88, 112103 (2006)] measured x-ray absorption near-edge structure (XANES) of As-doped ZnO and analyzed it as evidence for As{sub o} acceptors. However, upon carrying out first principles calculations, we found that the simulated XANES spectrum for As{sub o} is very different from that observed. Instead, the simulated spectrum for As{sub Zn}-2V{sub Zn} defect complex, which is predicted to be an acceptor [S. Limpijumnong et al., Phys. Rev. Lett. 92, 155504 (2004)], is far more consistent with the XANES data. The combination of our study, with the XANES of Vaithianathan et al. might be, until now, the strongest support for the As{sub Zn}-2V{sub Zn} model.

  5. Which-way information in a nested Mach-Zehnder interferometer

    NASA Astrophysics Data System (ADS)

    Potoček, Václav; Ferenczi, Gergely

    2015-08-01

    Recently, A. Danan et al. [Phys. Rev. Lett. 111, 240402 (2013), 10.1103/PhysRevLett.111.240402] performed a much-discussed experiment in which which-way information was obtained from the light in a nested Mach-Zehnder interferometer by weak measurement. The presented analysis using the two-state vector formalism drew the conclusions that the photons followed disconnected paths. We analyze this experiment using standard quantum optical methods and arrive at analytical expressions that match the experimental results without the need for such disconnected photon paths. We also propose a simple amendment to the experiment capable of displaying new phenomena, highlighting the advantages of our description.

  6. Gapless modes of fractional quantum Hall edges: a Hamiltonian study

    NASA Astrophysics Data System (ADS)

    Nguyen, Hoang; Joglekar, Yogesh; Murthy, Ganpathy

    2004-03-01

    We study the collective modes of the fractional quantum Hall edge states using the Hamiltonian formalism [1]. In this theory, the composite fermions are fully interacting; the collective modes are obtained within a conserving approximation which respects the constraints [2]. We present the gapless edge-mode dispersions at 1/3 and 2/5 filling fractions of unreconstructed and reconstructed edges. The dispersions are found to be nonlinear due to the variation of the effective magnetic field on the composite fermions. The implications of our study to the tunneling experiments into the edge of a fractional quantum Hall system [3] are discussed*. 1. R. Shankar and G. Murthy, Phys. Rev. Lett. 79, 4437 (1997). 2. G. Murthy, Phys. Rev. B 64, 195310 (2001). 3. A.M.Chang et. al., Phys. Rev. Lett. 86, 143 (2000). * Work supported by the NSF, Grant number DMR 031176.

  7. Continuous and discontinuous absorbing-state phase transitions on Voronoi-Delaunay random lattices

    NASA Astrophysics Data System (ADS)

    de Oliveira, Marcelo M.; Alves, Sidiney G.; Ferreira, Silvio C.

    2016-01-01

    We study absorbing-state phase transitions (APTs) in two-dimensional Voronoi-Delaunay (VD) random lattices with quenched coordination disorder. Quenched randomness usually changes the criticality and destroys discontinuous transitions in low-dimensional nonequilibrium systems. We performed extensive simulations of the Ziff-Gulari-Barshad model, and verified that the VD disorder does not change the nature of its discontinuous transition. Our results corroborate recent findings of Barghathi and Vojta [H. Barghathi and T. Vojta, Phys. Rev. Lett. 113, 120602 (2014), 10.1103/PhysRevLett.113.120602], stating the irrelevance of topological disorder in a class of random lattices that includes VD, and raise the interesting possibility that disorder in nonequilibrium APT may, under certain conditions, be irrelevant for the phase coexistence. We also verify that the VD disorder is irrelevant for the critical behavior of models belonging to the directed percolation and Manna universality classes.

  8. Fluctuations of Internal Energy Flow in a Vibrated Granular Gas

    NASA Astrophysics Data System (ADS)

    Puglisi, Andrea; Visco, Paolo; Barrat, Alain; Trizac, Emmanuel; van Wijland, Frédéric

    2005-09-01

    The nonequilibrium fluctuations of power flux in a fluidized granular media have been recently measured in an experiment [Phys. Rev. Lett. 92, 164301 (2004)PRLTAO0031-900710.1103/PhysRevLett.92.164301], which was announced to be a verification of the fluctuation relation (FR) by Gallavotti and Cohen. An effective temperature was also identified and proposed to be a useful probe for such nonequilibrium systems. We explain these results in terms of a two-temperature Poisson process. Within this model, supported by independent molecular dynamics simulations, power flux fluctuations do not satisfy the FR and the nature of the effective temperature is clarified. In the pursuit of a hypothetical global quantity fulfilling the FR, this points to the need of considering candidates other than the power flux.

  9. Transmissive optomechanical platforms with engineered spatial defects

    NASA Astrophysics Data System (ADS)

    Tignone, Edoardo; Pupillo, Guido; Genes, Claudiu

    2014-11-01

    Linear optomechanical photon-phonon couplings in the membrane-in-the-middle setup can be enhanced by taking a multielement approach as it was recently shown [A. Xuereb, C. Genes, and A. Dantan, Phys. Rev. Lett. 109, 223601 (2012), 10.1103/PhysRevLett.109.223601]. The particular example considered consists of a periodic array of membranes embedded in a high-finesse optical cavity and operating in the transmissive regime, i.e., around resonances of the compound cavity-membrane system. Here we propose further improvements in such a setup by breaking the translational invariance of the array, i.e., by considering quasiperiodic arrays with engineered quadratic spatial defects in the membrane positions. The localization of light modes induced by the defect combined with the access of the aforementioned transmissive regime window can lead to additional enhancement of the strength of both linear and quadratic optomechanical couplings.

  10. Entropy and density of states from isoenergetic nonequilibrium processes.

    PubMed

    Adib, Artur B

    2005-05-01

    Two identities in statistical mechanics involving entropy differences (or ratios of densities of states) at constant energy are derived. The first provides a nontrivial extension of the Jarzynski equality to the microcanonical ensemble [C. Jarzynski, Phys. Rev. Lett. 78, 2690 (1997)], which can be seen as a "fast-switching" version of the adiabatic switching method for computing entropies [M. Watanabe and W. P. Reinhardt, Phys. Rev. Lett. 65, 3301 (1990)]. The second is a thermodynamic integration formula analogous to a well-known expression for free energies, and follows after taking the quasistatic limit of the first. Both identities can be conveniently used in conjunction with a scaling relation (herein derived) that allows one to extrapolate measurements taken at a single energy to a wide range of energy values. Practical aspects of these identities in the context of numerical simulations are discussed.

  11. High-order power series expansion of the elastic interaction between conical membrane inclusions.

    PubMed

    Fournier, Jean-Baptiste; Galatola, Paolo

    2015-08-01

    We revisit the problem of the long-range interaction between two conical proteins inserted into a lipid membrane and interacting via the induced deformation of the membrane, first considered by Goulian et al. (M. Goulian, R. Bruinsma, P. Pincus, Europhys. Lett. 22, 145 (1993); Europhys. Lett. 23, 155 (1993)). By means of a complex variables formulation and an iterative solution, we determine analytically an arbitrary high-order expansion of the interaction energy in powers of the inverse distance between two inclusions of different sizes. At leading order and for inclusions of equal sizes, we recover the result obtained by Goulian et al.. We generalize the development to inclusions of different sizes and give explicit formulas that increase the precision by ten orders in the inverse distance.

  12. Electronic Griffiths Phases and Quantum Criticality at Disordered Mott Transitions

    NASA Astrophysics Data System (ADS)

    Dobrosavljevic, Vladimir

    2012-02-01

    The effects of disorder are investigated in strongly correlated electronic systems near the Mott metal-insulator transition. Correlation effects are foundootnotetextE. C. Andrade, E. Miranda, and V. Dobrosavljevic, Phys. Rev. Lett., 102, 206403 (2009). to lead to strong disorder screening, a mechanism restricted to low-lying electronic states, very similar to what is observed in underdoped cuprates. These results suggest, however, that this effect is not specific to disordered d-wave superconductors, but is a generic feature of all disordered Mott systems. In addition, the resulting spatial inhomogeneity rapidly increasesootnotetextE. C. Andrade, E. Miranda, and V. Dobrosavljevic, Phys. Rev. Lett., 104 (23), 236401 (2010). as the Mott insulator is approached at fixed disorder strength. This behavior, which can be described as an Electronic Griffiths Phase, displays all the features expected for disorder-dominated Infinite-Randomness Fixed Point scenario of quantum criticality.

  13. Optimal-path cracks in correlated and uncorrelated lattices

    NASA Astrophysics Data System (ADS)

    Oliveira, E. A.; Schrenk, K. J.; Araújo, N. A. M.; Herrmann, H. J.; Andrade, J. S., Jr.

    2011-04-01

    The optimal path crack model on uncorrelated surfaces, recently introduced by Andrade [Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.103.225503 103, 225503 (2009).], is studied in detail and its main percolation exponents computed. In addition to β/ν=0.46±0.03, we report γ/ν=1.3±0.2 and τ=2.3±0.2. The analysis is extended to surfaces with spatial long-range power-law correlations, where nonuniversal fractal dimensions are obtained when the degree of correlation is varied. The model is also considered on a three-dimensional lattice, where the main crack is found to be a surface with a fractal dimension of 2.46±0.05.

  14. Optical Study of LaO0.9F0.1FeAs: Evidence for a Weakly Coupled Superconducting State

    NASA Astrophysics Data System (ADS)

    Drechsler, S.-L.; Grobosch, M.; Koepernik, K.; Behr, G.; Köhler, A.; Werner, J.; Kondrat, A.; Leps, N.; Hess, C.; Klingeler, R.; Schuster, R.; Büchner, B.; Knupfer, M.

    2008-12-01

    We have studied the reflectance of the recently discovered superconductor LaO0.9F0.1FeAs in a wide energy range from the far infrared to the visible regime. We report on the observation of infrared active phonons, the plasma edge, and possible interband transitions. On the basis of this data and the reported in-plane penetration depth λL(0)=254nm [H. Luetkens , Phys. Rev. Lett. 101, 097009 (2008)PRLTAO0031-900710.1103/PhysRevLett.101.097009] a disorder sensitive relatively small value of the total electron-boson coupling constant λtot=λe-ph+λe-sp˜0.6±0.35 can be estimated adopting an effective single-band picture.

  15. Radial distribution function for hard spheres in fractal dimensions: A heuristic approximation.

    PubMed

    Santos, Andrés; de Haro, Mariano López

    2016-06-01

    Analytic approximations for the radial distribution function, the structure factor, and the equation of state of hard-core fluids in fractal dimension d (1≤d≤3) are developed as heuristic interpolations from the knowledge of the exact and Percus-Yevick results for the hard-rod and hard-sphere fluids, respectively. In order to assess their value, such approximate results are compared with those of recent Monte Carlo simulations and numerical solutions of the Percus-Yevick equation for a fractal dimension [M. Heinen et al., Phys. Rev. Lett. 115, 097801 (2015)PRLTAO0031-900710.1103/PhysRevLett.115.097801], a good agreement being observed.

  16. Phosphorenes with Non-Honeycomb Structures: A Much Extended Family

    NASA Astrophysics Data System (ADS)

    Wu, Menghao; Fu, Huahua; Zhou, Ling; Yao, Kailun; Zeng, Xiao Cheng; Huazhong University of Science; Technology Team; University of Nebraska-Lincoln Team

    We predict a new class of monolayer phosphorous allotropes, namely, ɛ-P, ζ-P, η-P and θ-P. Distinctly different from the monolayer α-P (black) and previously predicted β-P (Phys. Rev. Lett. 112, 176802 (2014)), γ-P and δ-P (Phys. Rev. Lett. 113, 046804 (2014)) with buckled honeycomb lattice, the new allotropes are composed of P4 square or P5 pentagon units that favor tricoordination for P atoms. The new four phases, together with 5 hybrid phases, are confirmed stable by first-principles calculations. In particularly, the θ-P is shown to be equally stable as the α-P (black) and more stable than all previously reported phosphorene allotropes. Prediction of nonvolatile ferroelastic switching and structural transformation among different phases under strains points out their potential applications via strain engineering. MHW was supported by start-up fund from Huazhong University of Science and Technology.

  17. Modification of the Porter-Thomas Distribution by Rank-One Interaction

    NASA Astrophysics Data System (ADS)

    Bogomolny, E.

    2017-01-01

    The Porter-Thomas (PT) distribution of resonance widths is one of the oldest and simplest applications of statistical ideas in nuclear physics. Previous experimental data confirmed it quite well, but recent and more careful investigations show clear deviations from this distribution. To explain these discrepancies, Volya, Weidenmüller, and Zelevinsky [Phys. Rev. Lett. 115, 052501 (2015), 10.1103/PhysRevLett.115.052501] argued that to get a realistic model of nuclear resonances is not enough to consider one of the standard random matrix ensembles which leads immediately to the PT distribution, but it is necessary to add a rank-one interaction which couples resonances to decay channels. The purpose of this Letter is to solve this model analytically and to find explicitly the modifications of the PT distribution due to such an interaction. Resulting formulas are simple, in good agreement with numerics, and could explain experimental results.

  18. Relativistic general-order coupled-cluster method for high-precision calculations: Application to the Al+ atomic clock

    NASA Astrophysics Data System (ADS)

    Kállay, Mihály; Nataraj, H. S.; Sahoo, B. K.; Das, B. P.; Visscher, Lucas

    2011-03-01

    We report the implementation of a general-order relativistic coupled-cluster method for performing high-precision calculations of atomic and molecular properties. As a first application, the black-body radiation shift of the Al+ clock has been estimated precisely. The computed shift relative to the frequency of the 3s21S0e→3s3p3P0o clock transition given by (-3.66±0.60)×10-18 calls for an improvement over the recent measurement with a reported result of (-9±3)×10-18 [Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.104.070802 104, 070802 (2010)].

  19. Statistical properties of a Laguerre-Gaussian Schell-model beam in turbulent atmosphere.

    PubMed

    Chen, Rong; Liu, Lin; Zhu, Shijun; Wu, Gaofeng; Wang, Fei; Cai, Yangjian

    2014-01-27

    Laguerre-Gaussian Schell-model (LGSM) beam was proposed in theory [Opt. Lett.38, 91 (2013 Opt. Lett.38, 1814 (2013)] just recently. In this paper, we study the propagation of a LGSM beam in turbulent atmosphere. Analytical expressions for the cross-spectral density and the second-order moments of the Wigner distribution function of a LGSM beam in turbulent atmosphere are derived. The statistical properties, such as the degree of coherence and the propagation factor, of a LGSM beam in turbulent atmosphere are studied in detail. It is found that a LGSM beam with larger mode order n is less affected by turbulence than a LGSM beam with smaller mode order n or a GSM beam under certain condition, which will be useful in free-space optical communications.

  20. Simulating atomic force microscope images with density functional theory: The role of nonclassical contributions to the force

    NASA Astrophysics Data System (ADS)

    Schaffhauser, Philipp; Kümmel, Stephan

    2016-07-01

    We discuss a scheme for calculating atomic force microscope images within the framework of density functional theory (DFT). As in earlier works [T. L. Chan et al., Phys. Rev. Lett. 102, 176101 (2009), 10.1103/PhysRevLett.102.176101; M. Kim and J. R. Chelikowsky, Appl. Surf. Sci. 303, 163 (2014), 10.1016/j.apsusc.2014.02.127] we do not simulate the cantilever explicitly, but consider it as a polarizable object. We go beyond previous studies by discussing the role of exchange and correlation effects; i.e., we approximately take into account the Pauli interaction between sample and cantilever. The good agreement that we find when comparing our calculated images to experimental images for the difficult case of the 8-hydroxyquinoline molecule demonstrates that exchange-correlation effects can play an important role in the DFT-based interpretation of AFM images.

  1. Random source generating far field with elliptical flat-topped beam profile

    NASA Astrophysics Data System (ADS)

    Zhang, Yongtao; Cai, Yangjian

    2014-07-01

    Circular and rectangular multi-Gaussian Schell-model (MGSM) sources which generate far fields with circular and rectangular flat-topped beam profiles were introduced just recently (Sahin and Korotkova 2012 Opt. Lett. 37 2970; Korotkova 2014 Opt. Lett. 39 64). In this paper, a random source named an elliptical MGSM source is introduced. An analytical expression for the propagation factor of an elliptical MGSM beam is derived. Furthermore, an analytical propagation formula for an elliptical MGSM beam passing through a stigmatic ABCD optical system is derived, and its propagation properties in free space are studied. It is interesting to find that an elliptical MGSM source generates a far field with an elliptical flat-topped beam profile, being qualitatively different from that of circular and rectangular MGSM sources. The ellipticity and the flatness of the elliptical flat-topped beam profile in the far field are determined by the initial coherence widths and the beam index, respectively.

  2. Measurement of high-pressure shock waves in cryogenic deuterium-tritium ice layered capsule implosions on NIF.

    PubMed

    Robey, H F; Moody, J D; Celliers, P M; Ross, J S; Ralph, J; Le Pape, S; Berzak Hopkins, L; Parham, T; Sater, J; Mapoles, E R; Holunga, D M; Walters, C F; Haid, B J; Kozioziemski, B J; Dylla-Spears, R J; Krauter, K G; Frieders, G; Ross, G; Bowers, M W; Strozzi, D J; Yoxall, B E; Hamza, A V; Dzenitis, B; Bhandarkar, S D; Young, B; Van Wonterghem, B M; Atherton, L J; Landen, O L; Edwards, M J; Boehly, T R

    2013-08-09

    The first measurements of multiple, high-pressure shock waves in cryogenic deuterium-tritium (DT) ice layered capsule implosions on the National Ignition Facility have been performed. The strength and relative timing of these shocks must be adjusted to very high precision in order to keep the DT fuel entropy low and compressibility high. All previous measurements of shock timing in inertial confinement fusion implosions [T. R. Boehly et al., Phys. Rev. Lett. 106, 195005 (2011), H. F. Robey et al., Phys. Rev. Lett. 108, 215004 (2012)] have been performed in surrogate targets, where the solid DT ice shell and central DT gas regions were replaced with a continuous liquid deuterium (D2) fill. This report presents the first experimental validation of the assumptions underlying this surrogate technique.

  3. Experimental study of multichromatic terahertz wave propagation through planar micro-channels

    DOE PAGES

    Shin, Young-Min -Min; Northern Illinois Univ., Dekalb, IL; Fermi National Accelerator Lab.; ...

    2012-04-10

    Previous theoretical and numerical studies [Y. M. Shin and L. R. Barnett, Appl. Phys. Lett. 92, 091501 (2008) and Y. M. Shin et al., Appl. Phys. Lett. 93, 221504 (2008)] have reported that a planar micro-channel with an asymmetric corrugation array supports strongly confined propagation of broadband THz plasmonic waves. The highly broad spectral response is experimentally demonstrated in the near-THz regime of 0.19-0.265 THz. Signal reflection and transmission tests on the three designed micro-channels including directional couplers resulted in a full-width-half-maximum bandwidth of ~ 50-60GHz with an insertion loss of approximately -5 dB, which is in good agreement withmore » simulation data. As a result, these micro-structures can be utilized for free electron beam and electronic/optic integrated devices« less

  4. Comment on "Controlling the spectral shape of nonlinear Thomson scattering with proper laser chirping"

    NASA Astrophysics Data System (ADS)

    Terzić, Balša; Krafft, Geoffrey A.

    2016-09-01

    Rykovanov, Geddes, Schroeder, Esarey and Leemans [Phys. Rev. Accel. Beams 19, 030701 (2016), 10.1103/PhysRevAccelBeams.19.030701; hereafter RGSEL] have recently reported on the analytic derivation for the laser pulse frequency modulation (chirping) which controls spectrum broadening for high laser pulse intensities. We demonstrate here that their results are the same as the exact solutions reported in Terzić, Deitrick, Hofler and Krafft [Phys. Rev. Lett. 112, 074801 (2014), 10.1103/PhysRevLett.112.074801; hereafter TDHK]. While the two papers deal with circularly and linearly polarized laser pulses, respectively, the difference in expressions for the two is just the usual factor of 1 /2 present from going from circular to linear polarization. In addition, we note the authors used an approximation to the number of subsidiary peaks in the unchirped spectrum when a better solution is given in TDHK.

  5. Collimated proton acceleration in light sail regime with a tailored pinhole target

    NASA Astrophysics Data System (ADS)

    Wang, H. Y.; Yan, X. Q.; Zepf, M.

    2014-06-01

    A scheme for producing collimated protons from laser interactions with a diamond-like-carbon + pinhole target is proposed. The process is based on radiation pressure acceleration in the multi-species light-sail regime [B. Qiao et al., Phys. Rev. Lett. 105, 155002 (2010); T. P. Yu et al., Phys. Rev. Lett. 105, 065002 (2010)]. Particle-in-cell simulations demonstrate that transverse quasistatic electric field at TV/m level can be generated in the pinhole. The transverse electric field suppresses the transverse expansion of protons effectively, resulting in a higher density and more collimated proton beam compared with a single foil target. The dependence of the proton beam divergence on the parameters of the pinhole is also investigated.

  6. Nematic and blue phase liquid crystals for temperature stabilization and active optical tuning of silicon photonic devices (Presentation Recording)

    NASA Astrophysics Data System (ADS)

    Ptasinski, Joanna N.; Khoo, Iam Choon; Fainman, Yeshaiahu

    2015-10-01

    We describe the underlying theories and experimental demonstrations of passive temperature stabilization of silicon photonic devices clad in nematic liquid crystal mixtures, and active optical tuning of silicon photonic resonant structures combined with dye-doped nematic and blue phase liquid crystals. We show how modifications to the resonator device geometry allow for not only enhanced tuning of the resonator response, but also aid in achieving complete athermal operations of silicon photonic circuits. [Ref.: I.C. Khoo, "DC-field-assisted grating formation and nonlinear diffractions in methyl-red dye-doped blue phase liquid crystals," Opt. Lett. 40, 60-63 (2015); J. Ptasinski, I.C. Khoo, and Y. Fainman, "Enhanced optical tuning of modified-geometry resonators clad in blue phase liquid crystals," Opt. Lett. 39, 5435-5438 (2014); J. Ptasinski, I.C. Khoo, and Y. Fainman, "Passive Temperature Stabilization of Silicon Photonic Devices Using Liquid Crystals," Materials 7(3), 2229-2241 (2014)].

  7. Parity Violation in Neutrino Transport and the Origin of Pulsar Kicks: Erratum

    NASA Astrophysics Data System (ADS)

    Lai, Dong; Qian, Yong-Zhong

    1998-07-01

    In the Letter ``Parity Violation in Neutrino Transport and the Origin of Pulsar Kicks'' by D. Lai and Y.-Z. Qian (ApJ, 495, L103 [1998]), at the beginning of § 3, a citation of Horowitz & Li (1997; now updated to Phys. Rev. Lett., 80, 3694 [1998]) should be added to the end of the sentence ``However, the cumulative effect due to multiple scatterings can enhance the asymmetry in neutrino emission.'' We have recently realized that in the bulk interior of the neutron star, where local thermodynamic equilibrium applies to a good approximation, detailed balance requires that there be no cumulative effect from multiple scatterings. Enhancement of neutrino emission asymmetry is obtained only after neutrinos thermally decouple from proto-neutron star matter. Therefore, our Letter overestimated the neutrino emission asymmetry and the resulting pulsar kicks. More details will be presented in a future paper (P. Arras & F. Lai, Phys. Rev. Lett., submitted [1998]).

  8. The (3000), (4000) and (5000) stretching overtone bands of silane—I. The effect of local-mode vibration on rotational constants

    NASA Astrophysics Data System (ADS)

    Zhu, Qingshi; Zhang, Baoshu; Ma, Yueren; Qian, Haibo

    The (4000) stretching overtone band of SiH 4 has been observed near 8347 cm -1. A symmetric top rotational structure, similar to that observed in the (3000) band of GeH 4: Q.-S. Zhu, B. A. Thrush and A. G. Robiette, Chem. Phys. Lett. 150, 181 (1988); Q.-S. Zhu and B. A. Thrush, J. Chem. Phys. 92, 2691 (1990) [1], and the (3000) and (5000) bands of SiH 4: Q.-S. Zhu, B.-S. Zhang, Y.-R. Ma and H.-B. Qian, Chem. Phys. Lett. 164, 596 (1989) [2], are clearly demonstrated. Three local-mode bands of SiH 4, (3000), (4000) and (5000) are analysed in the symmetric top model. A striking effect of local-mode vibration on rotational constants is observed and accounted for in a classical picture of vibrational localization.

  9. Overlap of exact and Gross-Pitaevskii wave functions in Bose-Einstein condensates of dilute gases

    NASA Astrophysics Data System (ADS)

    Klaiman, Shachar; Cederbaum, Lorenz S.

    2016-12-01

    It has been proven theoretically for bosons with two-body repulsive interaction potentials in the dilute limit that the Gross-Pitaevskii equation provides the exact energy and density per particle as does the basic many-particle Schrödinger equation [E. H. Lieb and R. Seiringer, Phys. Rev. Lett. 88, 170409 (2002), 10.1103/PhysRevLett.88.170409]. Here, we investigate the overlap of the Gross-Pitaevskii and exact ground-state wave functions. It is found that this overlap is always smaller than unity and may even vanish despite the fact that both wave functions provide the same energy and density per particle. Consequences are discussed.

  10. Universality and asymptotic scaling in drilling percolation

    NASA Astrophysics Data System (ADS)

    Grassberger, Peter

    2017-01-01

    We present simulations of a three-dimensional percolation model studied recently by K. J. Schrenk et al. [Phys. Rev. Lett. 116, 055701 (2016), 10.1103/PhysRevLett.116.055701], obtained with a new and more efficient algorithm. They confirm most of their results in spite of larger systems and higher statistics used in the present Rapid Communication, but we also find indications that the results do not yet represent the true asymptotic behavior. The model is obtained by replacing the isotropic holes in ordinary Bernoulli percolation by randomly placed and oriented cylinders, with the constraint that the cylinders are parallel to one of the three coordinate axes. We also speculate on possible generalizations.

  11. On the correctness of cosmology from quantum potential

    NASA Astrophysics Data System (ADS)

    Lashin, E. I.

    2016-02-01

    We examine in detail the cosmology based on quantal (Bohmian) trajectories as suggested in a recent study [A. F. Ali and S. Das, Phys. Lett. B 741, 276 (2014)]. We disagree with the conclusions regarding predicting the value of the cosmological constant Λ and evading the Big Bang singularity. Furthermore, we show that the approach of using a quantum corrected Raychaudhuri equation (QRE), as suggested in A. F. Ali and S. Das, Phys. Lett. B 741, 276 (2014), is unsatisfactory, because, essentially, it uses the Raychaudhuri equation (RE), which is a kinematical equation, in order to predict dynamics. In addition, even within this inconsistent framework, the authors have adopted unjustified assumptions and carried out incorrect steps leading to doubtful conclusions.

  12. Influence of permanent dipole and dynamic core-electron polarization on tunneling ionization of polar molecules

    NASA Astrophysics Data System (ADS)

    Hoang, Van-Hung; Zhao, Song-Feng; Le, Van-Hoang; Le, Anh-Thu

    2017-02-01

    We present a detailed theoretical investigation on strong-field ionization of polar (CO and NO) as well as nonpolar molecules (N2, O2, and CO2). Our results indicate that accounting for the Stark correction in the molecular tunneling ionization theory leads to overall fairly good agreements with numerical solutions of the time-dependent Schrödinger equation. Furthermore, we show that the effect of dynamic core-electron polarization, in general, has a weak influence on the angle-dependent ionization probability. However, in the case of CO we confirm the recent finding by B. Zhang, J. Yuan, and Z. Zhao [Phys. Rev. Lett. 111, 163001 (2013), 10.1103/PhysRevLett.111.163001] that accounting for dynamic core-polarization is crucial to achieving an overall good agreement with experiments.

  13. N-dimensional alternate coined quantum walks from a dispersion-relation perspective

    NASA Astrophysics Data System (ADS)

    Roldán, Eugenio; Di Franco, Carlo; Silva, Fernando; de Valcárcel, Germán J.

    2013-02-01

    We suggest an alternative definition of N-dimensional coined quantum walk by generalizing a recent proposal [Di Franco , Phys. Rev. Lett.0031-9007PRLTAO10.1103/PhysRevLett.106.080502 106, 080502 (2011)]. This N-dimensional alternate quantum walk, AQW(N), in contrast with the standard definition of the N-dimensional quantum walk, QW(N), requires only a coin qubit. We discuss the quantum diffusion properties of AQW(2) and AQW(3) by analyzing their dispersion relations that reveal, in particular, the existence of diabolical points. This allows us to highlight interesting similarities with other well-known physical phenomena. We also demonstrate that AQW(3) generates considerable genuine multipartite entanglement. Finally, we discuss the implementability of AQW(N).

  14. Investigation of quantum-entanglement simulation in random-variable theories augmented by either classical communication or nonlocal effects

    NASA Astrophysics Data System (ADS)

    Fahmi, Akbar

    2015-11-01

    Bell's theorem states that quantum mechanics is not a locally causal theory. This state is often interpreted as nonlocality in quantum mechanics. Toner and Bacon [Phys. Rev. Lett. 91, 187904 (2003), 10.1103/PhysRevLett.91.187904] have shown that a shared random-variable theory augmented by one bit of classical communication exactly simulates the Bell correlation in a singlet state. In this paper, we show that in Toner and Bacon protocol, one of the parties (Bob) can deduce another party's (Alice) measurement outputs, if she only informs Bob of one of her own outputs. Afterwards, we suggest a nonlocal version of Toner and Bacon protocol wherein classical communications is replaced by nonlocal effects, so that Alice's measurements cause instantaneous effects on Bob's outputs. In the nonlocal version of Toner and Bacon's protocol, we get the same result again. We also demonstrate that the same approach is applicable to Svozil's protocol.

  15. Evidence for Nanoparticles in Microwave-Generated Fireballs Observed by Synchrotron X-Ray Scattering

    NASA Astrophysics Data System (ADS)

    Mitchell, J. B. A.; Legarrec, J. L.; Sztucki, M.; Narayanan, T.; Dikhtyar, V.; Jerby, E.

    2008-02-01

    The small-angle x-ray scattering method has been applied to study fireballs ejected into the air from molten hot spots in borosilicate glass by localized microwaves [V. Dikhtyar and E. Jerby, Phys. Rev. Lett.PRLTAO0031-9007 96 045002 (2006)10.1103/PhysRevLett.96.045002]. The fireball’s particle size distribution, density, and decay rate in atmospheric pressure were measured. The results show that the fireballs contain particles with a mean size of ˜50nm with average number densities on the order of ˜109. Hence, fireballs can be considered as a dusty plasma which consists of an ensemble of charged nanoparticles in the plasma volume. This finding is likened to the ball-lightning phenomenon explained by the formation of an oxidizing particle network liberated by lightning striking the ground [J. Abrahamson and J. Dinniss, Nature (London)NATUAS0028-0836 403, 519 (2000)10.1038/35000525].

  16. Chronotaxic systems with separable amplitude and phase dynamics

    NASA Astrophysics Data System (ADS)

    Suprunenko, Yevhen F.; Clemson, Philip T.; Stefanovska, Aneta

    2014-01-01

    Until recently, deterministic nonautonomous oscillatory systems with stable amplitudes and time-varying frequencies were not recognized as such and have often been mistreated as stochastic. These systems, named chronotaxic, were introduced in Phys. Rev. Lett. 111, 024101 (2013), 10.1103/PhysRevLett.111.024101. In contrast to conventional limit cycle models of self-sustained oscillators, these systems posses a time-dependent point attractor or steady state. This allows oscillations with time-varying frequencies to resist perturbations, a phenomenon which is ubiquitous in living systems. In this work a detailed theory of chronotaxic systems is presented, specifically in the case of separable amplitude and phase dynamics. The theory is extended by the introduction of chronotaxic amplitude dynamics. The wide applicability of chronotaxic systems to a range of fields from biological and condensed matter systems to robotics and control theory is discussed.

  17. Negative differential conductivity and quantum statistical effects in a three-site Bose-Hubbard model

    NASA Astrophysics Data System (ADS)

    Olsen, M. K.; Corney, J. F.

    2016-09-01

    The use of an electron beam to remove ultracold atoms from selected sites in an optical lattice has opened up new opportunities to study transport in quantum systems [R. Labouvie et al., Phys. Rev. Lett. 115, 050601 (2015), 10.1103/PhysRevLett.115.050601]. Inspired by this experimental result, we examine the effects of number difference, dephasing, and initial quantum statistics on the filling of an initially depleted middle well in the three-well inline Bose-Hubbard model. We find that the well-known phenomenon of macroscopic self-trapping is the main contributor to oscillatory negative differential conductivity in our model, with phase diffusion being a secondary effect. However, we find that phase diffusion is required for the production of direct atomic current, with the coherent process showing damped oscillatory currents. We also find that our results are highly dependent on the initial quantum states of the atoms in the system.

  18. Optically Pumped NMR in the Fractional Quantum Hall Regime

    NASA Astrophysics Data System (ADS)

    Barrett, S. E.; Kuzma, N. N.; Khandelwal, P.; Pfeiffer, L. N.; West, K. W.

    1998-03-01

    Optically Pumped Nuclear Magnetic Resonance measurements are a local probe of the electron spin degree of freedom in n-type GaAs quantum wells.(S.E.Barrett et al.,Phys.Rev.Lett.72),1368(1994).^, footnote S. E. Barrett et al., Phys. Rev. Lett. 74, 5112 (1995)^, footnote R. Tycko et al., Science 268, 1460 (1995). We have recently shown that this OPNMR technique can be carried out in fields up to B=12 Tesla and temperatures down to T=0.3 K, making this technique a viable new probe of the Fractional Quantum Hall regime. We will discuss our latest measurements in these conditions, and compare our new results with previous measurements and the existing theoretical models for this regime.

  19. Optically Pumped Nuclear Magnetic Resonance near Landau level fillings ν = 1/2 and ν = 2/3

    NASA Astrophysics Data System (ADS)

    Kuzma, N. N.; Khandelwal, P.; Barrett, S. E.; Pfeiffer, L. N.; West, K. W.

    1997-03-01

    Optical pumping enables the direct detection of the nuclear magnetic resonance signal of ^71Ga nuclei located in an electron doped GaAs quantum well.footnote S. E. Barrett et al., Phys. Rev. Lett. 72, 1368 (1994) Using this technique, measurements of the Knight shift (K_S)footnote S. E. Barrett et al., Phys. Rev. Lett. 74, 5112 (1995) and spin-lattice relaxation time (T_1)footnote R. Tycko et al., Science 268, 1460 (1995) have been carried out in the Quantum Hall regimes. In this talk will present our recent measurements of KS and T1 near Landau level fillings ν = 1/2 and ν = 2/3, which were carried out in high magnetic fields (up to 12 Tesla) and at low temperatures (T < 1 Kelvin). We will discuss these results in light of our current understanding of the data obtained near ν = 1.

  20. Optically Pumped Nuclear Magnetic Resonance near Landau level filling ν = 1/3

    NASA Astrophysics Data System (ADS)

    Khandelwal, P.; Kuzma, N. N.; Barrett, S. E.; Pfeiffer, L. N.; West, K. W.

    1997-03-01

    Optical pumping enables the direct detection of the nuclear magnetic resonance signal of ^71Ga nuclei located in an electron doped GaAs quantum well.footnote S. E. Barrett et al., Phys. Rev. Lett. 72, 1368 (1994) Using this technique, measurements of the Knight shift (K_S)footnote S. E. Barrett et al., Phys. Rev. Lett. 74, 5112 (1995) and spin-lattice relaxation time (T_1)footnote R. Tycko et al., Science 268, 1460 (1995) have been carried out in the Quantum Hall regimes. In this talk will present our recent measurements of KS and T1 near Landau level filling ν = 1/3, which were carried out in high magnetic fields (up to 12 Tesla) and at low temperatures (T < 1 Kelvin). We will compare these results to the data obtained near ν = 1 and ν = 2/3.