Published July 1, 2008 | Version v1
Journal article Metadata-only

Gaussian effective potential for the standard model SU(2)xU(1) electroweak theory

Creators

  • 1. Dipartimento di Fisica e Astronomia, Universita di Catania, INFN Sezione di Catania and CNISM Sezione di Catania, Via S.Sofia 64, I-95123 Catania (Italy)

Description

The Gaussian effective potential is derived for the non-Abelian SU(2)xU(1) gauge theory of electroweak interactions. At variance with naive derivations, the Gaussian effective potential is proven to be a genuine variational tool in any gauge. The role of ghosts is discussed and the unitarity gauge is shown to be the only choice which allows calculability without insertion of further approximations. The full non-Abelian calculation confirms the existence of a light Higgs boson in the nonperturbative strong coupling regime of the Higgs sector.

Additional details

Identifiers

DOI
10.1103/PhysRevD.78.016003;
arXiv
arXiv:0803.3043v1;

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
78
Journal Issue
1
Journal Page Range
p. 016003-016003.9
ISSN
0556-2821
CODEN
PRVDAQ

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41001610
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
APPROXIMATIONS; GAUGE INVARIANCE; HIGGS BOSONS; HIGGS MODEL; INTERACTIONS; POTENTIALS; STANDARD MODEL; STRONG-COUPLING MODEL; SU-2 GROUPS; U-1 GROUPS; UNITARITY; VARIATIONAL METHODS; WEINBERG-SALAM GAUGE MODEL
Descriptors DEC
BOSONS; CALCULATION METHODS; ELEMENTARY PARTICLES; FIELD THEORIES; GRAND UNIFIED THEORY; INVARIANCE PRINCIPLES; LIE GROUPS; MATHEMATICAL MODELS; PARTICLE MODELS; POSTULATED PARTICLES; QUANTUM FIELD THEORY; SU GROUPS; SYMMETRY GROUPS; U GROUPS; UNIFIED GAUGE MODELS; UNIFIED-FIELD THEORIES

Optional Information

Notes
(c) 2008 The American Physical Society