Showing papers on "Gauge boson published in 1981"
Book•
01 Jun 1981
TL;DR: In this paper, the spin-O field and spin-1/2 field were considered and U1 symmetry and P,C invariance isotropic spin and G parity SU3 symmetry time reversal CPT invariance K-K system vacuum was discussed.
Abstract: Introduction to field theory mechanics of a finite system the spin-O field the spin-1/2 field Feynman diagrams quantam electrodynamics solitons particle physics - order-of-magnitude estimations particle physics - symmetry, general discussion U1 symmetry and P,C invariance isotropic spin and G parity SU3 symmetry time reversal CPT invariance K-K system vacuum as the source of asymmetry particle physics - interactions Quark confinement hadrons weak interactions weak and electromagnetic gauge theory Quark-Parton model and high-energy processes chiral symmetry.
951 citations
TL;DR: In this paper, a supersymmetric grand unified theory based on the standard SU (5) is constructed, which requires the naturalness as defined by Veltman (radiative corrections should not disturb the gauge hierarchy in the Born term), supersymmetry must be unbroken above TeV energies.
Abstract: Requiring the naturalness as defined by Veltman (radiative corrections should not disturb the gauge hierarchy in the Born term), supersymmetric grand unified theory based on the standard SU (5) is constructed. Supersymmetry must be unbroken above TeV energies. Renormalization-group analysis gives sin2θ W (M W ) and α c in agreement with experimental values. The unification massMGUT is larger than the standard model and hence proton lives longer.
635 citations
TL;DR: In this article, it was shown that single hard bremsstrahlung cross sections are remarkably simple in the ultrarelativistic limit for QED and for SU(N ) gauge theories.
363 citations
TL;DR: In this paper, an effective non-renormalizable SU(3)×SU(2)×U(1) invariant gauge theory results at ordinary energies when superheavy fields are integrated out from a grand unified theory based on a simple gauge group, and the solutions of second-order renormalization-group equations for the gauge coupling constants of the effective theory are examined.
237 citations
TL;DR: A complete set of gauge-invariant, observable composite fields for such theories, local ones and ones localized near strings (paths) is constructed in this article, and the validity of standard perturbation theory, based on assuming that 〈ϕ〉 ≠ 0, is examined.
171 citations
TL;DR: In this paper, the authors studied super p-form gauge superfields in four-dimensional spacetime with unextended supersymmetry for 0 ⩽ p 4 and gave the geometrical formulation of the N = 1 tensor-gauge multiplet.
168 citations
TL;DR: In this article, an extended restricted gauge theory is proposed, which takes into account not only the local structure but also the topological structure of a non-Abelian gauge symmetry into its dynamics.
Abstract: Based on the recently proposed restricted gauge theory an extended gauge theory is constructed which takes into account not only the local structure but also the topological structure of a non-Abelian gauge symmetry into its dynamics. The gauge potential is made of two parts, the binding gluons which provide the color-confining force and the valence gluons which behave as a gauge-covariant colored vector source. The physical spectrum of the theory includes the magnetic glueballs which are the massive collective modes of the vacuum condensation, and the electric glueballs made of the valence gluons which form a set of linearly rising trajectories of their own. Based on the group SU(2) the slope parameter a'/sub X/ of the leading glueball trajectories is estimated to be a'/sub X/approx. =0.47a' (a'approx. =0.9 GeV/sup 2/ is the Regge slope parameter of the mesons). Also, a crude estimate of the typical mass scale of the ground states of the trajectories is presented.
164 citations
TL;DR: In this paper, a composite model for quarks and leptons based on an exact SU(3)C × SU (3)H gauge theory and two fundamental J = 1 2 fermions: a charged T-rishon and a neutral V-rishons was proposed.
145 citations
TL;DR: The implications of the existence of a partial unification, previous to the grand unification into SO(10) are studied in this paper, with special emphasis on the influence of the Higgs bosons in the theory.
137 citations
TL;DR: The spin-1 partner of the goldstino (gravitino) under supersymmetry may be very light and very weakly coupled as mentioned in this paper, and it could appear in e + e − annihilations, K and ω decays and beam dump experiments.
TL;DR: In this paper, a hamiltonian lattice gauge theory is proposed which possesses local SU (2) gauge invariance and yet is defined on a Hilbert space of 5-dimensional real vectors for every link.
TL;DR: In particular, when the symmetry group of the space of extra dimensions is a subgroup of the initial gauge group, then the Higgs potential can be given a purely group-theoretic interpretation as mentioned in this paper.
TL;DR: In this article, an exact static monopole solution, possessingn units of magnetic charge and (4n-1) degrees of freedom, was constructed, generalising the recent work of Ward on two monopole solutions.
Abstract: An exact static monopole solution, possessingn units of magnetic charge and (4n-1) degrees of freedom, is constructed, generalising the recent work of Ward on two monopole solutions. The equations solved are those of anSU(2) gauge theory with adjoint representation Higgs field in the (BPS) limit of vanishing Higgs potential. The number of degrees of freedom is maximal for self-dual solutions. The construction is described in a deductive way, within the framework of the Atiyah-Ward formalism for self-dual gauge fields.
CERN1
TL;DR: In this paper, the couplings to fermions under the general simplifying assumption that each fermion acquires its mass from a unique technifermion condensate (monophagy), in which case they are naturally flavour conserving and relatively well-defined.
TL;DR: In this paper, the authors proposed a model in which quarks, leptons and weak vector bosons are two-body composites, and Higgs mesons are either many-body or many-scale composites confined by an SU(N) local gauge interaction.
TL;DR: In this article, strong coupling expansions for the mass gap in euclidean lattice gauge theories in any space-time dimension were derived for gauge groups SU(2), SU(3), Z2 and Z3 up to order g−16.
CERN1
TL;DR: In this paper, the phase structure of a non-abelian gauge Higgs field system is studied by Monte Carlo simulations on a 4 4 lattice and approximating both the gauge group and the Higgs manifold by the icosahedral subgroup of SU(2).
TL;DR: In this paper, the effects of background fields characterized by various values of the two Lorentz invariants F 1 = 1 2 (B 2 − E 2 ) and F 2 = E · B are discussed.
TL;DR: In this paper, a non-linear R ζ gauge condition is presented and explicitly developed in the framework of the SU(2)×U(1) gauge model, which is simpler than in R λ gauges, because couplings involving unphysical Higgs and gauge bosons disappear or simplify.
TL;DR: In this article, it was shown that in order for the U(1) Goldstone boson to decouple from the physical sector, a third rank skew-symmetric tensor gauge field theory has to be realized dynamically by asymptotic fields of bound states in QCD.
TL;DR: In this article, Monte Carlo evidence of a first-order phase transition in four-dimensional SO(3) lattice gauge theory was presented, which stands in sharp contrast to the known single-phase structure of the corresponding SU(2) theory, and suggests that the Z/sub 2/center degrees of freedom may be important to the thermodynamics of the SU (2) gauge system.
Abstract: We present Monte Carlo evidence of a first-order phase transition in four-dimensional SO(3) lattice gauge theory. This result stands in sharp contrast to the known single-phase structure of the corresponding SU(2) theory, and suggests that the Z/sub 2/ center degrees of freedom may be important to the thermodynamics of the SU(2) gauge system.
TL;DR: In this article, a new version of N = 2 Poincare supergravity which is algebraically simple is presented, which includes the SU(2) in the gauge group and can then impose constraints on the geometry of superspace such that all low-dimensional components of torsion and curvatures are constant.
TL;DR: In this paper, the construction of the two-dimensional abelian Higgs model was completed and it was shown that the remaining ultraviolet cutoff on the gauge field can be removed.
Abstract: In this paper the construction of the two-dimensional abelian Higgs model begun in two earlier articles is completed. First we show how to remove the remaining ultraviolet cutoff on the gauge field, then we construct the infinite volume limit and verify the axioms of Osterwalder and Schrader for the expectation values of gauge invariant local fields. Finally it is shown that an auxiliary gauge field mass that was introduced to avoid infrared problems can be safely removed.
TL;DR: In this article, the authors re-examined the particle assignments in a unified theory proposed previously and examined the spontaneous symmetry breaking via Higgs fields transforming as 27, 78 and 351.
Abstract: Particle assignments in a unified theory proposed previously are re-examined in both topless and standard versions. Spontaneous symmetry breaking via Higgs fields transforming as 27, 78 and 351 is examined and possible distributions of v.e.v.'s are discussed in both cases. The generation of a 351 effective Higgs field in a two-loop diagram that gives mass to the right-handed neutrino fields is shown to be compatible with the standard model.
TL;DR: Yukawa couplings or the quartic scalar coupling may become strong at an energy scale below the unification mass as discussed by the authors, which could lead to a natural explanation of a large gauge hierarchy.
TL;DR: In this paper, the authors discuss the little group for photons and gauge transformations from a pedagogical standpoint, based on Weinberg's work on Lorentz transformation properties of massless particles.
Abstract: Based on Weinberg’s work on Lorentz‐transformation properties of massless particles, we discuss the little group for photons and gauge transformations from a pedagogical standpoint. It is pointed out that the ’’translational’’ degrees of freedom associated with the photon little group can generate a transformation which guarantees the transversality of the four‐vector representation for photons. This little‐group transformation, which leaves the photon momemtum invariant, can be regarded as a gauge transformation.
TL;DR: In this paper, the phase diagram for two-dimensional Z(N) spin models was obtained and the existence of a soft phase characterised by the vanishing of all powers like the perimeter.
Abstract: Using a generalised duality transformation, symmetry considerations and assuming criticality to be continuous in the system parameters, the authors obtain the phase diagram for two-dimensional Z(N) spin models (four-dimensional gauge Z(N) models). Besides the phases characterised by the spontaneous breakdown of Z(N) symmetries for spin systems (the behaviour of the Wilson loop for gauge systems), the authors predict the existence of a soft phase characterised by the vanishing of all powers like the perimeter). For the spin system phases with non-vanishing order and disorder parameters are forbidden when those parameters obey non-trivial commutation relations. For gauge systems all combinations of Wilson and 't Hooft loops decaying as the area and the perimeter are allowed. Duality relations for three-dimensional gauge plus Higgs system are given.
TL;DR: In this paper, it was shown that in canonical quantization of general relativity on a closed, orientable three-manifold Σ, the diffeomorphism group Diff Σ of Σ gives rise to n-and ϵ-sectors analogous to the well-known Yang-Mills results.