Published October 4, 1993 | Version v1
Journal article Metadata-only

Vacuum tunneling and periodic structure in lattice Higgs models

Creators

  • 1. Bielefeld Univ. (Germany). Fakultaet fuer Physik
  • 2. HLRZ, Juelich (Germany)

Description

Using a geometric definition for the lattice Chern-Simons term in even dimensions, we have studied the distribution of Chern-Simons numbers for the 2d U(1) and the 4d SU(2) lattice Higgs models. The periodic structure of the distributions is preserved in our lattice formulation and has been examined in detail. In both cases the finite-size effects visible in the distribution of Chern-Simons numbers are well accounted for by the Haar measure. Moreover, we find that grows with the spatial volume. We also find numerical evidence that tunneling in 4d is increased at high temperature. (orig.)

Additional details

Publishing Information

Journal Title
Nuclear Physics. B
Journal Volume
406
Journal Issue
3
Journal Page Range
p. 825-846.
ISSN
0550-3213
CODEN
NUPBBO

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
25012175
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ALGORITHMS; ASYMPTOTIC SOLUTIONS; BOUNDARY CONDITIONS; COMPUTERIZED SIMULATION; FOUR-DIMENSIONAL CALCULATIONS; GAUGE INVARIANCE; GEOMETRY; HIGGS MODEL; INSTANTONS; LATTICE FIELD THEORY; MEASURE THEORY; MONTE CARLO METHOD; PROBABILITY; QUANTUM NUMBERS; SU-2 GROUPS; TEMPERATURE DEPENDENCE; TUNNEL EFFECT; TWO-DIMENSIONAL CALCULATIONS; U-1 GROUPS; UNIFIED GAUGE MODELS; VACUUM STATES
Descriptors DEC
CALCULATION METHODS; CONSTRUCTIVE FIELD THEORY; FIELD THEORIES; INVARIANCE PRINCIPLES; LIE GROUPS; MATHEMATICAL MODELS; MATHEMATICS; PARTICLE MODELS; QUANTUM FIELD THEORY; QUASI PARTICLES; SIMULATION; SU GROUPS; SYMMETRY GROUPS; U GROUPS