We study the phase structure of a three-dimensional (3D) Abelian Higgs model with singly and doubly charged scalar fields coupled to a compact Abelian gauge field. The model is pretending to describe systems of strongly correlated electrons such as high-T{sub c} superconductivity in overdoped regime and exotic ...

We describe a framework to develop, implement and validate any perturbative Lagrangian-based particle physics model for further theoretical, phenomenological and experimental studies. The starting point is FeynRules, a Mathematica package that allows to generate Feynman rules for any Lagrangian and then, through dedicated interfaces, automatically pass the corresponding ...

The decay modes of a S-wave superheavy quarkonium, formed by a possible fourth generation quark in two Higgs doublets models are studied. Due to the enhacement of Yukawa couplings and longitudional weak bosons the main decays of these superheavy states wi...

Bounds on charged Higgs masses and couplings in models with two Higgs doublets are examined that came from CP violation in the neutral K system. Bounds on charged Higgs masses and couplings in two Higgs doublet models are also obtained from their effects on neutral-B-meson ...

We investigate nonperturbative features of a three-dimensional Abelian Higgs model with singly and doubly charged scalar fields coupled to a single compact Abelian gauge field. The model is pretending to describe various planar systems of strongly correlated electrons such as high-T{sub c} superconductivity in the ...

We solve the one loop Renormalization Group Equations (RGE) for the Yukawa couplings in the Standard Model with two Higgs doublets. In the RGE we include the contributions of the up and down quarks. In this approximation we explore universality and unification assumptions to study the mass-hierarchy problem through the running of the ...

The standard model introduces a single complex scalar doublet which is manifested as a single physical Higgs boson after electroweak symmetry breaking. In contrast, many models beyond the standard model are two Higgs doublet models (2HDM) which predict th...

We carry out a detailed analysis of the general two Higgs doublet model with CP violation. We describe two different parametrizations of this model, and then study the Higgs boson masses and the trilinear Higgs couplings for these two parametrizations. Within a rather general model, we find ...

The most general two-Higgs doublet model contains new sources of flavour violation that are usually in conflict with the experimental constraints. One possibility to suppress the exotic contribution to the flavour changing neutral currents consists on imposing the alignment of the Yukawa couplings. This condition presumably holds at a high-energy scale and ...

We consider electroweak scenario for baryon asymmetry generation in extended model with two Higgs doublets. The upper bound on the mass of the lightest Higgs boson is obtained. It is shown to coincide with that of the theory with one Higgs doublet namely ...

We derive a sum rule which shows how to extend limits from LEP data on the masses of the lightest {ital CP}-even and {ital CP}-odd Higgs bosons of a {ital CP}-conserving two-Higgs doublet model to any two Higgs bosons of a general {ital CP}-violating two-Higgs-doublet ...

We characterize models where electroweak symmetry breaking is driven by two light Higgs doublets arising as pseudo-Nambu�Goldstone bosons of new dynamics above the weak scale. They represent the simplest natural two Higgs doublet alternative to supersymmetry. We construct their low-energy effective Lagrangian making only few specific ...

The minimal supersymmetric standard model involves a rather restrictive Higgs potential with two Higgs fields. Recently, the full set of classes of symmetries allowed in the most general two-Higgs-doublet model was identified; these classes do not include the supersymmetric limit as a ...

We present a general phenomenological analysis of a class of Two Higgs Doublet Models with Flavor Changing Neutral Currents arising at the tree level. The existing constraints mainly affect the couplings of the first two generations of quarks, leaving the...

An attractive possibility is discussed of explaining the up-down quark mass splitting in terms of a large ratio of vacuum expectation values of the two Higgs scalars in softly broken supersymmetric models. In this context, the following topics are discuss...

We consider a Two Higgs Doublet Model with Flavor Changing Scalar Neutral Currents arising at the tree level. All the most important constraints are taken into account and the compatibility with the present Electroweak measurements is examined. The Flavor...

We perform a numerical analysis of Higgs-to-Higgs decays within a type II two-Higgs-doublet model (2HDM), highlighting several channels that cannot occur in its supersymmetric version, thereby allowing one to possibly distinguish between these two scenarios. Our results are compliant with all available experimental bounds from both direct and indirect ...

BUHEP-01-2 hep-ph/0102027 A brief overview of some of the last decade�s developments in the Topmode/Topcolor class of models is presented. In addition, a new Topcolor type scenario, named Top-Bottom Color, is suggested. A seesaw mechanism with new weak doublet quarks has been introduced to lower the previous theoretical prediction for the large top quark mass; without a ...

Abelian and non-Abelian bosonization of two-dimensional models is discussed within the path-integral framework. Concerning the Abelian case, the equivalence between the massive Thirring and the sine-Gordon models is rederived in a very simple way by making a chiral change in the fermionic ...

We study an anisotropic inflation model with a gauge kinetic function for a non-abelian gauge field. We find that, in contrast to abelian models, the anisotropy can be either a prolate or an oblate type, which could lead to a different prediction from abelian models for the ...

We discuss in detail the possible connection between the two topologically equivalent but gauge-nonequivalent Ansatzes for charged (neutral) vortices in an SU(2) non-Abelian Higgs model with (without) a Chern-Simons term. In particular, we show that when the magnitude of the two Higgs fields are proportional to ...

We study a simple two-Higgs-doublet model in the Randall-Sundrum scenario, with an IR brane localized Higgs field and a second doublet arising from a t&tmacr; condensate due to strong Kaluza-Klein gluon effects. The effective two-Higgs-doublet model predicts that the ratio of the brane to condensate vacuum ...

We have investigated the "weak chaos" exponent to see if it can be considered as a classification parameter of different sandpile models. Our simulation results show that the (Abelian) BTW sandpile model, the (non-Abelian) Zhang model, and the ("Abelian") Manna ...

In a recently proposed neutrinophilic two-Higgs-doublet model, the low-energy (sub-MeV) effective theory consists of a real scalar with a vacuum expectation value of O(0.1)eV and three Dirac neutrinos. Other models could lead to the same low-energy theory. In this Brief Report, we study constraints on the parameter space of the ...

After briefly reviewing the problems associated with non-Abelian monopoles, we turn our attention to the development in our understanding of non-Abelian vortices in the last several years. In the U(N) model with Nf = N flavors in which they were first found, the fluctuations of the orientational modes along the vortex length and in ...

A recent study of gamma-ray data from the Galactic center motivates the investigation of light (�7-10GeV) particle dark matter models featuring tau-lepton pairs as dominant annihilation final state. The lepton-specific two-Higgs-doublet model provides a natural framework where light, singlet scalar dark matter can pair-annihilate ...

In this talk I describe some rather elegant mathematical properties of a simple cellular automaton model for self organized criticality. I will discuss how a subset of states in this model form an Abelian group. Then I will show how to construct the non-t...

We study the production of the charged Higgs boson at the CERN LHC in the left-right symmetric model. It is shown that there exists a lower bound of the cross section. We investigate that predicted cross sections of this model are generally larger than those of the two Higgs doublet model or ...

We study the decay width of the inclusive process b -> s g g in the two Higgs doublet model with three-level flavor changing neutral currents (model III). We analyse the dependencies of the differential decay width to the s- quark energy Es and model III parameters, charged Higgs mass mH+/- ...

We discuss the implications of assuming a four-zero Yukawa texture for the properties of the charged Higgs boson within the context of the general two-Higgs-doublet model of type III. We begin by presenting a detailed analysis of the charged Higgs boson couplings with heavy quarks and the resulting pattern for its decays. The production of charged Higgs ...

Spontaneous CP violation motivates the introduction of two Higgs doublets in the electroweak theory. Such a simple extension of the standard model has three neutral Higgs bosons and a pair of charged Higgs; it especially leads to rich CP-violating sources, including the induced Kobayashi-Maskawa CP-violating phase, the mixing of the ...

We calculate the cross section of Higgs boson pair production at a photon collider in the two Higgs doublet model. We focus on the scenario in which the lightest CP even Higgs boson (h) has the Standard Model like couplings to the gauge bosons. We take into account the one-loop correction to the hhh coupling as ...

In a general two Higgs doublet model where both Higgses couple to all fermions flavour changing neutral currents (FCNCs) can get arbitrarily large. Such models are thus in conflict with experiment unless there is some mechanism suppressing the FCNCs. A possibility to do so recently brought up is the assumption that ...

The relation between infrared-fixed point analysis and underlying fermion models of composite Higgs bosons is studied in a simple two-Higgs-doublet model and in a single-Higgs-doublet model with a singular interaction added. We examine how the infrared-fi...

The relation between infrared-fixed point analysis and underlying fermion models of composite Higgs bosons is studied in a simple two-Higgs-doublet model and in a single-Higgs-doublet model with a singular interaction added. We examine how the infrared-fixed point analysis can be affected by a difference in ...

Presented is a detailed study of chiral-symmetry breaking in the semiclassical approximation of the two-dimensional Abelian Higgs model with massless fermions. Emphasis is on examining the consistency of the dynamical symmetry-breaking mechanism with the requirements of gauge invariance.

We examine the possibility of finding charged Higgs bosons (H/sup + -/) at the SSC. The charged Higgs boson is produced with a top quark via a gluon + bottom quark interaction (g + b ..-->.. H + t). For the two Higgs doublet models, H/sup + -/ decays predominantly into t + b. Since the background from QCD processes will be very ...

In this study, we propose new Higgs production mechanisms with multiphoton final states in the fermiophobic limit of the two Higgs doublet model. The processes are: gg?hh, gg?Hh followed by H?hh and gg?Ah followed by A?hZ. In the fermiophobic limit, gg?hh and gg?Ah?hhZ would give rise to 4? signature while gg?Hh?hhh can give a 6? final ...

The branching ratios of the lightest CP-even Higgs boson h{sup 0} are calculated in the framework of the general two higgs doublet model. Different scenarios are presented taking into account constraints on the flavor changing neutral currents factors obtained in previous works. Plausible scenarios where appear flavor changing ...

We study double Higgs-strahlung production at the future Linear Collider in the framework of the Two Higgs Doublet Models through the following channels: e{sup +}e{sup -}{yields}{phi}{sub i}{phi}{sub j}Z, {phi}{sub i} = h deg., H deg., A deg. All these processes are sensitive to triple Higgs couplings. Hence observations of them ...

A possible solution to the strong CP problem is pointed out within the context of a Weinberg--Salam model with two Higgs fields coupled in a Peccei--Quinn symmetric fashion. This is done by extending the colour group to a bigger simple group which is broken at some very high energy. The model contains a heavy ...

Parity violation induced by the chromo-anapole form factor of the bottom quark, generated from weak corrections, is studied in polarized hadron collisions. The forward-backward asymmetry in the bottom quark pair production at polarized pp and p{anti p} colliders is evaluated in the Standard Model and in a Two Higgs Doublet ...

The dual transformation discovered in the two-dimensional Ising and planar Heisenberg models is applied to gauge theories in four dimensions. It is shown that after the dual transformation the Abelian Higgs model gives the same partition function as the relativistic hydrodynamics of Kalb and Ramond and of Nambu coupled to the Higgs ...

The authors show that models with an abelian family symmetry which accounts for the observed hierarchies of masses and mixings in the quark sector may also accommodate quasi-degeneracies in the neutrino mass spectrum. Such approximate degeneracies are, in...

Abelian lattice gauge theories coupled to Higgs's fields in the fundamental representation of the gauge group are studied with reference to phase transitions at extreme values of the gauge coupling. The scalar fields are allowed to vary radially and this ...

On the basis of global Abelian gauge invariant classical field theoretical models, the problem of existence of hidden symmetry with respect to some nonlocal gauge transformations without including compensating fields is investigated. In the 2-dimensional ...

The abelian generalization of QED sub 2 to include SU(M) flavor and diagonal SU(N) color is considered. The operator solutions and confinement aspects of these models are discussed in detail for the case of massless and massive fermions. For a non-vanishi...

I argue that coupling the Abelian Higgs model to gravity plus a negative cosmological constant leads to black holes which spontaneously break the gauge invariance via a charged scalar condensate slightly outside their horizon. This suggests that black holes can superconduct.

I argue that coupling the Abelian Higgs model to gravity plus a negative cosmological constant leads to black holes which spontaneously break the gauge invariance via a charged scalar condensate slightly outside their horizon. This suggests that black holes can superconduct.

It is suggested that the modification in the Higgs sector of the Weinberg-Salam model which is required by CP violation, also provides an explanation for the delta I = 1/2 enhancement in the non-leptonic decays of strange particles. (Atomindex citation 09...

A grand unified SO(10)-model with two light Higgs doublets whose vacuum expectation values are connected with breaking of electroweak SU(2)(sub L)xU(1)(sub Y) group is proposed. Taking into account the naturality condition connected with the absence of fl...

We study the most general multi-Higgs- doublet model with natural flavor conservation. The couplings of a charged scalar H(sub i)(sup (+-)) to up quarks, down quarks and charged leptons depend on three new complex parameters, X(sub i), Y(sub i) and Z(sub ...

We study the phenomenology of the e-? lepton flavor violation (LFV) in a general two Higgs Doublet Model (2HDM) including the supersymmetric case. We compute the decay rate expressions of ??e?, ??eee, and ??e conversion in nuclei at two loop level. In particular, it is shown that ??e? is generally the most sensitive channel to probe ...

The counter terms for the one-loop renormalization of the H(sup +)H(sup -) amplitude in the framework of the minimal SUSY extension of ther standard model are calculated. 2 refs. (Atomindex citation 23:060742)

The standard electroweak model is extended to include two Higgs-boson doublets. The ratios of the quartic scalar couplings to the U(1) gauge coupling are assumed to remain finite in the ultraviolet limit. The resulting numerical upper bounds on the masses of the four physical Higgs bosons are presented. At least one mass must be less ...

We derive relativistic wave equations for the bound states of two Higgs bosons within the Higgs sector of the minimal standard model. The variational method and the Hamiltonian formalism of QFT are used to obtain the equations using a simple ||hh>+||hhh> Fock-space ansatz. We present approximate solutions of these equations for a ...

of the Higgs bosons with photon(s) for the case when the mass of the lightest Higgs particle h in the 2HDM boson with a mass around 100 GeV in the Standard Model, in the Two Higgs Doublet Model at these facilities, except the Higgs scalar(s). In this scenario, additional particles could very well exist

Using topological arguments it is shown that in the context of the MIT bag model single non-Abelian monopoles are impossible and that the total magnetic flux of the bag must be Abelian. The size of the color-singlet bag containing three monopoles is estimated and found to be of the same order as a hadron bag, which may cause a problem ...

In Part I we examine bounds from CP violation in the neutral K system on charged Higgs masses and couplings in models with two Higgs doublets. While CP violation is still due only to a non-zero phase in the Kobayashi-Maskawa matrix, there are additional short-distance contributions involving charged Higgs exchange rather than W boson ...

We initiate a programme to compute curvature corrections to the non-Abelian Born Infeld action. This is based on the calculation of derivative corrections to the Abelian Born Infeld action, describing a maximal brane, to all orders in F=B+2??F. An exact calculation in F allows us to apply the Seiberg Witten map, reducing the maximal ...

The quark mass matrices ansatze proposed by Fritzsch, Du-Xing and Fukuyama-Nishiura in the framework of the general two Higgs doublet model are studied. The corresponding Cabbibo-Kobayashi-Maskawa matrix elements are computed in all cases and compared with their experimental values. The complex phases of the anstaze are taken into ...

We illustrate the possibility of observing signals from Flavor Changing Neutral Currents, originating from the scalar sector of a Two Higgs Doublet Model. In particular, we focus on the tree level process (mu)(sup +)(mu)(sup (minus)) (yields) (bar t)c + (...

We examine the possibility of finding charged Higgs bosons (H sup +- ) at the SSC. The charged Higgs boson is produced with a top quark via a gluon + bottom quark interaction (g + b -> H + t). For the two Higgs doublet models, H sup +- decays predominantl...

The one-loop decays [ital t][r arrow][ital cV], where [ital V]=[gamma],[ital g], or [ital Z], and [ital t][r arrow][ital cH] are examined in the Standard and two- Higgs-doublet models.

In the nonsupersymmetric two-Higgs-doublet-standard model, we find t-b-(tau) Yukawa unification consistent with the CERN-LEP data, experimental values of m(sub b), m(sub (tau)), and m(sub t) = 160 GeV-190 GeV at lower mass scales: M(sub c) (approx equal) ...

Top quarks produced in pairs are predicted to experience spin correlations. Due to the large ttbar statistics expected for the LHC, it should be possible to search for new physics effects in angular variables sensitive to these correlations. We investigate, for a general two-Higgs Doublet Model (2HDM), the charged Higgs boson decay of the top quark through ...

If the standard model is extended to include two Higgs doublets and a singlet, there is a region of parameter space for which electromagnetism is broken in a narrow temperature range just {ital below} the electroweak transition temperature. In this range, the Universe superconducts, and monopoles will rapidly annihilate. It is shown ...

We study the conditions of maximal CP violation in the neutral Higgs mass matrix of the two Higgs doublet model. We get fixed values of tan(beta) and constraints on the Higgs potential parameters. Two neutral Higgs scalars are constrained to be lighter th...

We consider a Two Higgs Doublet Model with Flavor Changing Scalar Neutral Currents arising at the tree level. All the most important constraints are taken into account and the compatibility with the present Electroweak measurements is examined. The Flavor Changing couplings involving the third family are not constrained to be very ...

The possibility to test CP invariance in the W(sup +)W(sup -) production via photon fusion at NLC was studied. The predictions of the CP violation effects are made within two Higgs doublet extensions of the minimal standard model, where CP violation is in...

A specific ansatz for the Yukawa couplings of a four-generation SU(2)/sub L/ x U(I) model with two Higgs doublets is discussed which leads to neutral flavour conservation, spontaneous CP violation and to a genuinely complex mixing matrix. W exchange conse...

We investigate two models for performing topological quantum gates with the Aharonov-Bohm (AB) and Aharonov-Casher (AC) effects. Topological one- and two-qubit Abelian phases can be enacted with the AB effect using charge qubits, whereas the AC effect can be used to perform all single-qubit gates (Abelian and ...

We examine current-carrying configurations of cosmic strings in non-Abelian gauge theories. We study the solutions numerically and point out that the currents will be at best {ital dynamically} stable and not subject to any topological quantization or conservation, as in conventional models of string superconduction. We suggest that ...

We examine current-carrying configurations of cosmic strings in non-Abelian gauge theories. We study the solutions numerically and point out that the currents will be at best dynamically stable and not subject to any topological quantization or conservation, as in conventional models of string superconduction. We suggest that ...

We give a gauge description of the adiabatic charge pumping in closed systems, both in Abelian and non-Abelian processes, and by means of asymptotic Wilson loops in a suitable parameter manifold. Our geometric formulation provides new insights into this issue, and a very simple algorithm for numerical computations. Indeed, as we show first, discretized ...

Possible models of Yukawa interaction are discussed in the two Higgs doublet model (THDM) under the discrete symmetry imposed to avoid the flavor changing neutral current at the leading order. It is known that there are four types of such models corresponding to the possible different ...

In this article we present new, genuinely non-Abelian vortex solutions in SU(2) Yang-Mills-Higgs theory with only one isovector scalar field. These non-Abelian solutions branch off their Abelian counterparts (Abrikosov-Nielsen-Olesen vortices) for precise values of the Higgs potential coupling constant {lambda}. For all values of ...

We find new non-Abelian flux tube solutions in a model of N{sub f} scalar fields in the fundamental representation of SU(N)xU(1) with N{<=}N{sub f} (the 'extended non-Abelian Higgs model'), and study their main properties. Among the solutions there are spinning strings as well as ...

I put forward a two-Higgs-doublet model in which CP violation is mediated only by the neutral Higgs bosons, via the mechanism of scalar-pseudoscalar mixing. In this model there is no CP violation in the exchange of either W bosons or of charged Higgs bosons. The model is therefore an approximate realization of the superweak theory of ...

String-nets and quantum loop gases are two prominent microscopic lattice models to describe topological phases. String-net condensation can give rise to both Abelian and non-Abelian anyons, whereas loop condensation usually produces Abelian anyons. It has been proposed, however, that generalized quantum loop gases ...

We describe how the entanglement renormalisation approach to topological lattice systems leads to a general procedure for treating the whole spectrum of these models in which the Hamiltonian is gradually simplified along a parallel simplification of the connectivity of the lattice. We consider the case of Kitaev's quantum double models, both ...

We study a family of non-Abelian topological models in a lattice that arise by modifying the Kitaev model through the introduction of single-qudit terms. The effect of these terms amounts to a reduction in the discrete gauge symmetry with respect to the original systems, which corresponds to a generalized mechanism of explicit symmetry ...

In this work, we propose a new non-Abelian generalization of the Born Infeld Lagrangian. It is based on a geometrical property of the Abelian Born Infeld Lagrangian in its determinantal form. Our goal is to extend the Abelian second-type Born Infeld action to the non-Abelian form preserving this geometrical ...

The one dimensional quantum walk of anyonic systems is presented. The anyonic walker performs braiding operations with stationary anyons of the same type ordered canonically on the line of the walk. Abelian as well as non-Abelian anyons are studied and it is shown that they have very different properties. Abelian anyonic walks ...

The one dimensional quantum walk of anyonic systems is presented. The anyonic walker performs braiding operations with stationary anyons of the same type ordered canonically on the line of the walk. Abelian as well as non-Abelian anyons are studied and it is shown that they have very different properties. Abelian anyonic walks ...

By employing the QCD factorization approach, we calculated the next-to-leading order new physics contributions to the branching ratios, CP asymmetries, isospin and U-spin symmetry breaking of the exclusive decays B to V ? (V = K^*, ?), induced by the charged Higgs penguins in general two-Higgs-doublet models. Within the considered parameter space, we found ...

We consider the minimal model in which dark matter is stabilized by a non-Abelian discrete symmetry. The symmetry group is taken to be D?S, which is the smallest non-Abelian finite group. The minimal model contains (nontrivial) singlet and doublet scalar representations of D which couple to the Standard ...

We construct a simple theory in which the fine-tuning of the standard model is significantly reduced. Radiative corrections to the quadratic part of the scalar potential are constrained to be symmetric under a global U(4) x U(4){prime} symmetry due to a discrete Z{sub 2} 'twin' parity, while the quartic part does not possess this symmetry. As a consequence, ...

The theory of abelian categories proved very useful, providing an axiomatic framework for homology and cohomology of modules over a ring and, in particular, of abelian groups. For many years, a similar categorical framework has been lacking for non-abelian (co)homology, the subject of which includes the categories of ...

Many extensions of the standard model of particle physics predict the existence of charged Higgs bosons with substantial couplings to standard model particles, which would render them observable both directly at the LHC and indirectly at B-factories. For example, the charged Higgs boson couplings to fermions in two ...

We study the phenomenology of the charged Higgs boson in the flipped two-Higgs-doublet model, in which one doublet gives mass to up-type quarks and charged leptons, and the other gives mass to down-type quarks. We present the charged Higgs branching ratios and summarize the indirect constraints. We extrapolate existing LEP searches for H{sup +}H{sup -} and ...

We study the effects of CP violation in charged Higgs boson production pp ? tH � + X at the LHC, as well as in the charged Higgs boson decays H � ? tb and H � ? W � H i 0, i = 1, 2, 3. The study is done in the framework of the type II complex Two Higgs Doublet Model (2HDM) with softly broken Z 2 symmetry. In this ...

Vaccum condensation and vacuum stability are investigated in the non-Abelian Schwinger model. {copyright} 1989 Academic Press, Inc.

We derive general expressions for the K�hler form of the L2-metric in terms of standard 2-forms on vortex moduli spaces. In the case of abelian vortices in gauged linear sigma-models, this allows us to compute explicitly the K�hler class of the L2-metric. As an application we compute the total volume of the moduli space of abelian ...

Starting from a recently proposed Abelian topological model in 2+1 dimensions, which involve the Kalb-Ramond two form field, we study a non-Abelian generalization of the model. An obstruction for the generalization is detected. However, we show that the goal is achieved if we introduce a vectorial auxiliary field. ...

We consider a nonlinear O(3) model in 2+1 dimensions minimally coupled to Chern-Simons gauge fields. All the static, finite energy, regular solutions of the model are discussed. Through a suitable reduction of the gauge group, the given solutions are mapped into an Abelian purely magnetic vortex. A two-dimensional Euclidean action ...

We present a general phenomenological analysis of a class of Two Higgs Doublet Models with Flavor Changing Neutral Currents arising at the tree level. The existing constraints mainly affect the couplings of the first two generations of quarks, leaving the possibility for non negligible Flavor Changing couplings of the top quark open. ...

The inclusive branching ratio for the process b-->?-?�?X has been measured using hadronic Z decays collected by the OPAL experiment at LEP in the years 1992-2000. The result is: BR(b-->?-?�?X)=(2.78+/-0.18+/- 0.51)%. This measurement is consistent with the Standard Model expectation and puts a constraint of tan?/MH+/-<0.53 GeV-1 at the /95% confidence level on ...

The multiple point principle (MPP) is applied to the nonsupersymmetric two-Higgs doublet extension of the standard model (SM). The existence of a large set of degenerate vacua at some high energy scale caused by the MPP results in a few relations between Higgs self-coupling constants which can be examined at future colliders. The numerical analysis reveals ...

We calculate two-Higgs bound states (Higgsonium) as resonances in Z0-Z0 scattering using a |Z0Z0>+|h>+|hh>+|hhh>+|hhhhh> Fock-space ansatz in a Hamiltonian formalism of the Higgs model. The variational method is used to obtain coupled integral equations connecting the various channels. Reduced forms of these equations are solved analytically ...

The reaction p{anti p} {r_arrow} t{anti b}{Chi} is found to be rather rich in exhibiting several different types of CP asymmetries. The spin of the top quark plays an important role. Asymmetries are related to form factors arising from radiative corrections of the t{anti b}W production vertex due to non-standard physics. As illustrations, effects are studied in two ...

We derive relativistic wave equations for the bound states of two Higgs bosons within the Higgs sector of the minimal standard model. The variational method and the Hamiltonian formalism of QFT are used to obtain the equations using a simple [vert bar][ital hh][r angle]+[vert bar][ital hhh][r angle] Fock-space ansatz. We present ...

A comprehensive phenomenological analysis of a two Higgs doublet model, with flavor changing scalar currents at the tree level, called model III, is presented. Constraints from existing experimental information especially on {Delta}F=2 processes are systematically incorporated. Constraints emerging from rare ...

The possible consequences of heavy fourth-generation "vector meson" bound states, formed by the exchange of the Higgs boson, are discussed within the context of the Standard Model with either one or two Higgs doublets. It is suggested that such bound states could make negative contributions to the rho parameter, thereby loosening the ...

We consider the two Higgs doublet model (2HDM) of type III which leads to flavor changing neutral currents (FCNC) at the tree level. In the framework of this model we can have, in principle, two situations: the case (a) when both doublets acquire a vacuum expectation value different from zero and the case (b) when ...

We study lepton flavor violation (LFV) associated with tau leptons in the framework of the two Higgs doublet model, in which LFV couplings are introduced as a deviation from Model II Yukawa interaction. Parameters of the model are constrained from experimental results and also from requirements ...

The fundamental constraint on two Higgs doublet models comes from the requirement of sufficiently suppressing flavor-changing neutral currents. There are various standard approaches for dealing with this problem, but they all tend to share a common feature; all of the Higgs doublets couple very weakly to the first generation quarks. ...

We study flavor-violating processes in the production or decay of a neutral pseudoscalar meson P{sup 0} in the framework of a type-III two Higgs doublet model with four-texture Yukawa couplings. We use a version of the model where Yukawa interactions of neutral Higgs bosons allow for flavor change at the ...

Smallness of neutrino masses can be explained by introducing a tiny vacuum expectation value of an extra-Higgs doublet which couples to right-handed neutrinos ( N R ). This situation is naturally realized in ?-Two Higgs Doublet Model (?THDM), where a TeV-scale seesaw mechanism can work well. We investigate observable phenomenology of ...

We study the coupling of abelian gauge theories to four-dimensional simplicial quantum gravity. The gauge fields live on dual links. This is the correct formulation if we want to compare the effect of gauge fields on geometry with similar effects studied so far for scalar fields. It shows that gauge fields couple equally weakly to geometry as scalar fields, and it offers an ...

A numerical study is made of the gauge field model of magnetic confinement. The nonlinear differential equations describing a flux tube are solved by a relaxation method. Particular attention is paid to the boundary conditions at the center of the flux tube and the effect of these boundary conditions in differentiating between Abelian and ...

We consider the London limit of the 3D Georgi-Glashow model when bosonic or fermionic dynamical quarks are present. We briefly discuss the compactification of the abelian modes based on a generalized dual transformation of the matter sector. We also compare with other approaches dealing with the quark sector in compact abelian gauge ...

In this study, we propose new Higgs production mechanisms with multiphoton final states in the fermiophobic limit of the two Higgs doublet model. The processes are: gg{yields}hh, gg{yields}Hh followed by H{yields}hh and gg{yields}Ah followed by A{yields}hZ. In the fermiophobic limit, gg{yields}hh and gg{yields}Ah{yields}hhZ would give ...

We constrain some lepton flavor violating vertices in the context of the two Higgs doublet model type III, assuming that the lightest Higgs scalar mass mh0 is about 115 GeV. Specifically, based on the g-2 muon factor and the decay width of ??e?, the following quite general bounds are obtained: 7.62�10-4??2???4.44�10-2; ...

Consequences of a specific class of two Higgs doublet models in which the Higgs induced tree level flavor changing neutral currents (FCNC) display minimal flavor violation are considered. These FCNC are fixed in terms of the Cabibbo Kobayashi Maskawa (CKM) matrix elements and the down quark masses. The minimal ...

We study the Higgs sector of supersymmetric models containing two Higgs doublets with a light MSSM-like CP odd Higgs, m{sub A} < or approx. 10 GeV, and tan{beta} < or approx. 2.5. In this scenario all Higgses resulting from two Higgs doublets: light and heavy CP even Higgses, h ...

We examine various direct and indirect constraints on the lepton-specific two-Higgs doublet model and discuss its phenomenology at colliders in the allowed parameter space. The constraints we consider come from the precision electroweak data, the direct search for Higgs boson, the muon anomalous magnetic moment, as well as some theoretical consistency ...

We find some constraints on the flavor changing vertices of the two Higgs doublet model, from the {?}M_{B_{text{d}}} measurement. Although bounds from this observable have already been considered, this paper takes into account the role of a new operator not included previously, as well as the vertices ?_{bb}, ?_{tc} and ?_{sb}. Using ...

We analyze the correlations between electric dipole moments (EDMs) of the neutron and heavy atoms and CP violation in B mixing in two Higgs doublet models respecting the Minimal Flavour Violation hypothesis, with flavour-blind CP-violating (CPV) phases. In particular, we consider the case of flavour-blind CPV phases from (i) the Yukawa ...

We deduce a new set of symmetries and relations between the coefficients of the expansion of Abelian and non-Abelian fractional quantum Hall (FQH) states in free (bosonic or fermionic) many-body states. Our rules allow us to build an approximation of a FQH model state with an overlap increasing with growing system size (that may ...

We deduce a new set of symmetries and relations between the coefficients of the expansion of Abelian and non-Abelian fractional quantum Hall (FQH) states in free (bosonic or fermionic) many-body states. Our rules allow us to build an approximation of a FQH model state with an overlap increasing with growing system size (that may ...

We study double Higgs production at the future linear collider in the framework of the two Higgs doublet models through the following channels: e{sup +}e{sup -}{yields}{phi}{sub i}{phi}{sub j}Z, {phi}{sub i}=h{sup 0}, H{sup 0}, A{sup 0}, H{sup {+-}}. All these processes are sensitive to triple Higgs couplings. Hence observations of ...

We demonstrate that there are regions of parameter space in the next-to-minimal (i.e. two-Higgs-doublet, one-Higgs-singlet superfield) supersymmetric extension of the SM for which none of the Higgs bosons are observable either at LEP2 with $\\sqrt{s}=192 GeV$ and an integrated luminosity of $L=1000inverse pb$ or at the LHC with $L=600 inverse fb$.

In this article, a planar relativistic self-dual Chern-Simons model with two Higgs particles and two gauge fields is considered. The main purpose is to show the existence of the nontopological multivortex solutions to the system from a mathematical perspective. Specifically, a certain type of nontopological solutions can be constructed ...

We illustrate the possibility of observing signals from Flavor Changing Neutral Currents, originating from the scalar sector of a Two Higgs Doublet Model. In particular, we focus on the tree level process {mu}{sup +}{mu}{sup {minus}} {yields} {bar t}c + {bar c}t, via scalar exchange in the s-channel, as a distinctive process for ...

To a first approximation, the quark mixing matrix has ?q13=?q23=0, whereas the lepton mixing matrix has ?l23=?/4. We show how this structure may be understood if the family symmetry is Q8, the quaternion group of eight elements. We find three viable scenarios for the Majorana neutrino mass matrix, each depending on four parameters and predicting a specific mass spectrum. The phenomenology of the ...

We study universality classes and crossover behaviors in non-Abelian directed sandpile models in terms of the metastable pattern analysis. The non-Abelian property induces spatially correlated metastable patterns, characterized by the algebraic decay of the grain density along the propagation direction of an avalanche. Crossover ...

Applying the dynamic shooting method, we proved the existence of nontopological radially symmetric n-vortex solutions to the self-dual equation in non-Abelian Chern-Simons gauge theory with a {Phi}{sup 2}-type potential. Moreover, we obtained all possible radially symmetric nontopological bare (or 0-vortex) solutions in the non-Abelian Chern-Simons ...

We present two generic classes of supersymmetric solutions of N=2, d=4 supergravity coupled to non-Abelian vector supermultiplets with a gauge group that includes an SU(2) factor. The first class consists of embeddings of the 't Hooft-Polyakov monopole and in the considered model is a globally regular, asymptotically flat spacetime. The other ...

We describe the short-distance properties of the spacetime of a system of D particles by viewing their matrix-valued coordinates as coupling constants of a deformed world-sheet ? model. We show that the Zamolodchikov metric on the associated moduli space naturally encodes properties of the non-Abelian dynamics, and from this we derive new spacetime ...

We analyze the edge lying on the interface of two non-Abelian quantum Hall states: the Moore-Read spin-polarized state at filling factor 1/2, supporting Ising anyons, and the non-Abelian spin-singlet state at filling factor 4/7, supporting Fibonacci anyons. We find that the neutral sector of the edge is described by a minimal model ...

Non-Abelian anyons exist in certain spin models and may exist in quantum Hall systems at certain filling fractions. In this work, we studied the ground state of dynamical SU(2) level-kappa Chern-Simons non-Abelian anyons at finite density and no external magnetic field. We find that, in the large-kappa limit, the topological ...

SU(4) dynamical symmetry is shown to imply a no-double-occupancy constraint on the minimal symmetry description of antiferromagnetism and d-wave superconductivity. This implies a maximum doping fraction of (1/4) for cuprates and provides a microscopic critique of the projected SO(5) model. We propose that SU(4) superconductors are representative of a class of compounds that we ...

V A Fock, in 1926, was the first to have the idea of an Abelian gradient transformation and to discover that the electromagnetic interaction of charged particles has a gradient invariance in the framework of quantum mechanics. These transformation and invariance were respectively named Eichtransformation and Eichinvarianz by H Weyl in 1929 (the German verb zu eichen means to ...

Several authors have pointed out that the scalar-mediated interaction of neutrinos in a neutrinophilic two-Higgs-doublet model can be as strong as an electromagnetic interaction [M. Sher and C. Triola, Phys. Rev. DPRVDAQ1550-7998 83, 117702 (2011)10.1103/PhysRevD.83.117702][F. Wang, W. Wang, and J. M. Yang, Europhys. Lett.EULEEJ0295-5075 76, 388 ...

We develop an approach to the dilute-instanton-gas approximation for the Abelian Higgs model when massless fermions are present. We discuss the properties of the resulting partition function and evaluate fermionic correlation functions which become nontrivial when topological sectors are taken into account.

We check the universality properties of the two-dimensional Abelian sandpile model by computing some of its properties on the honeycomb lattice. Exact expressions for unit-height correlation functions in the presence of boundaries and for different boundary conditions are derived. Also, we study the statistics of the boundaries of avalanche waves by using ...

The authors show that models with an abelian family symmetry which accounts for the observed hierarchies of masses and mixings in the quark sector may also accommodate quasi-degeneracies in the neutrino mass spectrum. Such approximate degeneracies are, in this context, associated with large mixing angles. The parameters of this class of ...

We consider the lattice Abelian Higgs model with frozen radial degrees of freedom using the mean-field approximation with corrections. The free energy corrections contain essential 0(1) and 0(1/d) terms. In the weak coupling region the behaviour of the fr...

We re-examine the work of Antoniadis et al.[1] on the apparent gauge-parameter dependence of the mass counterterm for a scalar field coupled to gravity and show that the same effect appears in a spontaneously broken abelian Higgs model. In both cases the Nielsen identities assure the gauge-parameter independence of the pole masses. Laboratoire associ� ...

We analyze the effect of local spin operators in the Kitaev model on the honeycomb lattice. We show, in perturbation around the isolated-dimer limit, that they create Abelian anyons together with fermionic excitations which are likely to play a role in experiments. We derive the explicit form of the operators creating and moving ...

An SO(3) non-Abelian gauge theory is introduced. The Hamiltonian density is determined and the constraint structure of the model is derived. The first-class constraints are obtained and gauge-fixing constraints are introduced into the model. Finally, using the constraints, the Dirac brackets can be determined and a canonical ...

These notes are intended to provide a pedagogical introduction to the abelian sandpile model of self-organized criticality, and its related models. The abelian group, the algebra of particle addition operators, the burning test for recurrent states, equivalence to the spanning trees problem are described. The exact ...

A non-Abelian generalization of the neutral Witten current-carrying string model is discussed in which the bosonic current carrier belongs to a two-dimensional representation of SU(2). We find that the current-carrying solutions can be of three different kinds: either the current spans a U(1) subgroup, and in which case one is left with an ...

Recently, a pair of experiments (Lu et al 2009 Phys. Rev. Lett. 102 030502; Pachos et al 2009 New J. Phys. 11 083010) demonstrated the simulation of Abelian anyons in a spin network of single photons. The experiments were based on the Abelian discrete gauge theory spin lattice model of Kitaev (Kitaev 2003 Ann. Phys., NY 303 2). Here, ...

When an antisymmetric tensor potential is coupled to the field strength of a gauge field via a BANDF coupling and a kinetic term for B is included, the gauge field develops an effective mass. The theory can be made invariant under a non-Abelian vector gauge symmetry by introducing an auxiliary vector field. The covariant quantization of this theory requires ghosts for ghosts. ...

Anyons are particlelike excitations of strongly correlated phases of matter with fractional statistics, characterized by nontrivial changes in the wave function, generalizing Bose and Fermi statistics, when two of them are interchanged. This can be used to perform quantum computations [A. Yu. Kitaev, Ann. Phys. (N.Y.) 303, 2 (2003)]. We show how to simulate the creation and manipulation of ...

We investigate fully nonlinear, non-Abelian excitations of quark-antiquark plasma using relativistic fluid theory in cold plasma approximation. There are mainly three important nonlinearities, coming from various sources such as non-Abelian interactions of Yang-Mills (YM) fields, Wong's color dynamics, and plasma nonlinearity, in our ...

In this work we discuss the formation of zero energy vortex and chiral edge modes in a fermionic representation of the Kitaev honeycomb model. We introduce the representation and show how the associated Jordan-Wigner procedure naturally defines the so-called branch cuts that connect the topological vortex excitations. Using this notion of the branch cuts we show how to, in the ...

We examine the star lattice Kitaev model whose ground state is a chiral spin liquid. We fermionize the model such that the fermionic vacua are toric-code states on an effective Kagome lattice. This implies that the Abelian phase of the system is inherited from the fermionic vacua and that time-reversal symmetry is spontaneously broken ...

We present the current algebra of a particular form in the nonlinear ?-model. The algebra has a non-Abelian form with field-dependent structure functions. We comment on the connection of the model with noncommutative space.

The partition function of all classical spin models, including all discrete standard statistical models and all Abelian discrete lattice gauge theories (LGTs), is expressed as a special instance of the partition function of the 4D Z2 LGT. This unifies all classical spin models with apparently very different ...

The partition function of all classical spin models, including all discrete standard statistical models and all Abelian discrete lattice gauge theories (LGTs), is expressed as a special instance of the partition function of the 4D Z{sub 2} LGT. This unifies all classical spin models with apparently very different ...

The partition function of all classical spin models, including all discrete standard statistical models and all Abelian discrete lattice gauge theories (LGTs), is expressed as a special instance of the partition function of the 4D Z2 LGT. This unifies all classical spin models with apparently very different ...

We generalize the hybrid magnetofluid model of a charged fluid interacting with an electromagnetic field to the dynamics of a relativistic hot fluid interacting with a non-Abelian field. The fluid itself is endowed with a non-Abelian charge and the consequences of this generalization are worked out. Applications of this formalism to ...

We generalize the hybrid magnetofluid model of a charged fluid interacting with an electromagnetic field to the dynamics of a relativistic hot fluid interacting with a non-Abelian field. The fluid itself is endowed with a non-Abelian charge and the consequences of this generalization are worked out. Applications of this formalism to ...

We propose a classical model for the non-Abelian Chern-Simons theory coupled to [ital N] pointlike sources and quantize the system using the Becchi-Rouet-Stora-Tyutin technique. The resulting quantum mechanics provides a unified framework for fractional spin, braid statistics, and Knizhnik-Zamolodchikov equation.

In this review paper we summarize basic concepts of T-duality. Starting from the simplest case of abelian T-duality, we show the techniques used for finding the dual model and summarize developments in the field of Poisson-Lie T-duality/plurality, which deals with non-abelian groups. We also mention possible extension of T-duality to ...

We review the string representations of Abelian-projected SU(2)- and SU(3)-gauge theories and their application to the evaluation of bilocal field strength correlators. The large distance asymptotic behaviours of the latter ones are shown to be in agreement with the Stochastic Vacuum Model of QCD and existing lattice data

We show how to bosonize two-dimensional non-Abelian models using finite chiral determinants calculated from a Gauss decomposition. The calculation is quite straightforward and hardly more involved than for the Abelian case. In particular, the counterterm A{bar A}, which is normally motivated from gauge invariance and then added by ...

We establish the existence of a chiral spin liquid (CSL) as the exact ground state of the Kitaev model on a decorated honeycomb lattice, which is obtained by replacing each site in the familiar honeycomb lattice with a triangle. The CSL state spontaneously breaks time reversal symmetry but preserves other symmetries. There are two topologically distinct CSLs separated by a ...

The spectral properties of Kitaev's honeycomb lattice model are investigated both analytically and numerically with the focus on the non-abelian phase of the model. After summarizing the fermionization technique which maps spins into free Majorana fermions, we evaluate the spectrum of sparse vortex configurations and derive ...

In three spatial dimensions, particles are limited to either bosonic or fermionic statistics. Two-dimensional systems, on the other hand, can support anyonic quasiparticles exhibiting richer statistical behaviors. An exciting proposal for quantum computation is to employ anyonic statistics to manipulate information. Since such statistical evolutions depend only on topological characteristics, the ...

We derive the one loop renormalization group equations for the Cabibbo-Kobayashi-Maskawa (CKM) matrix for the standard model, its two Higgs extension, and the minimal supersymmetric extension in a novel way. The derived equations depend only on a subset of the model parameters of the renormalization group equations ...

A fermiophobic Higgs boson can arise in models with an extended Higgs sector, such as models with scalars in an isospin triplet representation. In a specific model with a scalar triplet and spontaneous violation of lepton number induced by a scalar singlet field, we show that fermiophobia is not a fine-tuned situation, unlike in ...

In the two Higgs doublet model, natural flavour conservation can be achieved through the use of a discrete Z symmetry. A less restrictive condition is the requirement of alignment in the Yukawa sector. So far, alignment has been an ansatz, not rooted in a specific model. In this Letter we present a ...

We consider the wrong-Higgs interactions such as type-III two Higgs doublet models. Generally, such interactions cause flavor problems. However, if new Yukawa interactions have the same flavor structure as that of the standard model, we do not have any flavor problems. In this work we propose a microscopic ...

We consider a minimal extension of the standard model where a real, gauge singlet scalar field is added to the standard spectrum. Introducing the Ansatz of universality of scalar couplings, we are led to a scenario which has a set of very distinctive and testable predictions: (i) the mixing between the standard model Higgs and the new state is near ...

We consider a minimal extension of the standard model where a real, gauge singlet scalar field is added to the standard spectrum. Introducing the Ansatz of universality of scalar couplings, we are led to a scenario which has a set of very distinctive and testable predictions: (i) the mixing between the standard model Higgs and the new state is near ...

The charged fermion mass matrices are invariant under U(1)3 symmetry linked to the fermion number transformation. Under the condition that the definition of this symmetry in arbitrary weak basis does not depend upon Higgs parameters such as ratio of vacuum expectation values, a class of two Higgs doublet models (2HDM) can be identified ...

In a so-called Higgs portal dark matter model, Higgs exchange processes are essential for both dark matter annihilation in the early Universe and direct search experiments. We study a scalar dark matter model with two Higgs doublets, and find that the possible maximal value for the branching ratio of the invisible ...

We examine decays of a spin-1 bottomonium into a pair of light scalar dark matter (DM) particles, assuming that dark matter is produced due to exchange of heavy degrees of freedom. We perform a model-independent analysis and derive formulae for the branching ratios of these decays. We confront our calculation results with the experimental data. We show that the considered ...

A new class of models with pseudo Nambu-Goldstone bosons is constructed using a [ital non][minus][ital Abelian] symmetry in the right-handed Majorana neutrino sector of [ital seesaw] neutrino mass models. The phase structure of these models is examined both at zero and nonzero temperatures, with particular emphasis ...

In the past several decades there have been a number of proposals for computing with dual forms of non-Abelian Yang-Mills theories on the lattice. Motivated by the gauge-invariant, geometric picture offered by dual models and successful applications of duality in the U(1) case, we revisit the question of whether it is practical to perform numerical ...

Topological quantum states of matter, both Abelian and non-Abelian, are characterized by excitations whose wavefunctions undergo nontrivial statistical transformations as one excitation is moved (braided) around another. Topological quantum computation proposes to use the topological protection and the braiding statistics of a ...

Topological quantum states of matter, both Abelian and non-Abelian, are characterized by excitations whose wavefunctions undergo nontrivial statistical transformations as one excitation is moved (braided) around another. Topological quantum computation proposes to use the topological protection and the braiding statistics of a ...

We study an extension of the procedure to construct duality transformations among abelian gauge theories to the non abelian case.

We review recent works on statics and dynamics of magnetic vortices in the Ginzburg-Landau model of superconductivity and of Nielsen-Olesen (Nambu) strings in the Abelian-Higgs model of particle physics.

The authors investigate the cosmological constraints on exotic stable matter states which arise in realistic free fermionic superstring models. These states appear in the superstring models due to a ''Wilson-line'' breaking of the unifying non-Abelian gau...

We show that the Abelian bosonization of continuum limit of the 1D Hubbard model corresponds to the 2D explicitly conformal invariant Gaussian model at weak coupling limit. A universality argument is used to extend the equivalence to an entire segment of ...

Conformal field theory is applied to the study of quantum critical phenomena. By making use of Abelian bosonization procedure, we obtain a Coulomb gas picture of continuum limit of one-dimensional Hubbard model. It is shown that semi-direct product of two...

Two dimensional lattice spin (chiral) models over (possibly non-abelian) compact groups are formulated in terms of a generalized Pauli algebra. Such models over cyclic groups are written in terms of the generalized Clifford algebra. An automorphism of thi...

Leptonic decays of B-mesons are theoretically very clean probes for testing the Standard Model (SM) and possible physics beyond it. Amongst the various leptonic decays of the B-meson, the pure dileptonic decay B ? ?+ ?- is very important, as this mode is helicity suppressed in the SM but can be substantially enhanced in some of the models beyond the SM, ...

A direct connection between physical parameters of general two-Higgs-doublet model (2HDM) potentials after electroweak symmetry breaking (EWSB) and the parameters that define the potentials before EWSB is established. These physical parameters, such as the mass matrix of the neutral Higgs bosons, have well-defined transformation properties under basis ...

h models, the normal doublet Higgs is expected to have sizeable invisible decay modes to the majoron, due to the strong Higgs majoron coupling. This can have a significant effect on the Higgs phenomenology at LEP II. In particular, the invisible decay could contribute to the signal of two acoplanar jets and missing momentum. This feature of majoron models ...

In this paper a model with two Higgs doublets is presented where a discrete symmetry is imposed so that the flavor-changing neutral currents in the down-quark sector are naturally suppressed and obey a hierarchy determined by the hierarchy of the Kobayashi-Maskawa matrix elements. The fermion couplings to charged-Higgs bosons are ...

We propose an approach to generate many-body interactions from two-body interactions with stable cat states. Applied to the celebrated Kitaev honeycomb model, our approach opens a spectral gap in the gapless phase of the model without any external magnetic field. We confirm the non-Abelian topological properties of a generalized Kitaev ...

I discuss a family of statistical-mechanics models in which (some classes of) elements of a finite group G occupy the (directed) edges of a lattice; the product around any plaquette is constrained to be the group identity e. Such a model may possess topological order, i.e. its equilibrium ensemble has distinct, symmetry-related thermodynamic components ...

We show that a minimal clone has a nontrivial weakly abelian representation iff it has a nontrivial abelian representation, and that in this case all representations are weakly abelian.

This work extends to the /D-dimensional space-time the topological mass generation mechanism of the non-abelian BF model in four dimensions. In order to construct the gauge invariant non-abelian kinetic terms for a (/D-2)-form /B and a 1-form /A, we introduce an auxiliary (/D-3)-form /V. Furthermore, we obtain a complete set of BRST ...

Understanding the behavior of topologically ordered lattice systems at finite temperature is a way of assessing their potential as fault-tolerant quantum memories. We compute the natural extension of the topological entanglement entropy for T>0, namely, the subleading correction I{sub topo} to the area law for mutual information. Its dependence on T can be written, for ...

We address two distinct but related issues: (i) the impact of (two-dimensional) axions in a two-dimensional theory known to model confinement, the CP(N-1) model; (ii) bulk axions in four-dimensional Yang-Mills theory supporting non-Abelian strings. In the first case n, n kinks play the role of 'quarks'. They are known ...

The observed hierarchy of quark and lepton masses can be parametrized by nonrenormalizable operators with dimensions determined by an anomalous Abelian family symmetry, a gauge extension to the minimal supersymmetric standard model. Such an Abelian symmetry is generic to compactified superstring theories, with its anomalies compensated ...

We review the properties of static, higher dimensional black hole solutions in theories where non-abelian gauge fields are minimally coupled to gravity. It is shown that black holes with hyperspherically symmetric horizon topology do not exist in d>4, but that hyperspherically symmetric black holes can be constructed numerically in generalized Einstein-Yang-Mills ...

We study the quantum anomalous Hall effect described by a class of two-component Haldane models on square lattices. We show that the latter can be transformed into a pseudospin triplet p+ip-wave paired superfluid. In the long wavelength limit, the ground-state wave function is described by Halperin�s (1,1,-1) state of neutral fermions analogous to the double-layer quantum ...

The next-to-minimal supersymmetric Standard Model (NMSSM) includes a Higgs iso-singlet superfield in addition to the two Higgs doublet superfields of the minimal extension. If the Higgs fields remain weakly coupled up to the GUT scale, as naturally motivated by the concept of supersymmetry, the mixing between singlet and doublet fields ...

The present discrepancy between the experimental value and theoretical expectations of BR(B-->eveX) suggests that there could be some heretofore ``hidden'' mode in B decays (with bad signature and vanishing standard model expectations) that is in fact at the (10-20)% level. In two Higgs doublet models with very ...

We present the results of a search for Higgs bosons predicted in two-Higgs-doublet models, in the case where the Higgs bosons decay to tau lepton pairs, using 1.8 fb{sup -1} of integrated luminosity of p{bar p} collisions recorded by the CDF II experiment at the Fermilab Tevatron. Studying the mass distribution in events where one or both tau leptons decay leptonically, no ...

We present the results of a search for Higgs bosons predicted in two-Higgs-doublet models, in the case where the Higgs bosons decay to tau lepton pairs, using 1.8 fb(-1) of integrated luminosity of pp collisions recorded by the CDF II experiment at the Fermilab Tevatron. Studying the mass distribution in events where one or both tau leptons decay leptonically, no evidence for ...

All quark mass matrices with texture zeroes obtained through weak basis transformations are confronted with the experimental data. The reconstruction of the quark mass matrices Mu and Md at the electroweak scale is performed in a weak basis where the matrices are Hermitian and have a maximum of three vanishing elements. The same procedure is also accomplished for the Yukawa coupling matrices at ...