TY  - JOUR
AB  - We investigate vacuum transitions in lattice higgs models at finite temperature. The 2 dimensional U(1) Higgs model is used as a toy model. In the 4 dimensional SU(2) Higgs model the region of the phase transition and temperatures above it are considered. The couplings (beta, kappa, lambda) = (2.25, 0.27, 0.5) and (8.0, 0.12996, 0.0017235) correspond to masses in lattice units (a(sigma) m(H), a(sigma) m(W)) of (0.02, 0.05) and (0.2, 0.2), respectively. The algorithm is described and a parallelized version is proposed. Taking the influence of the finite lattice into account we discuss temperature effects. We compare our results with perturbative estimates and claim that they link low and high temperature approximations.
DA  - 1993
DO  - 10.1142/S012918319300094X
KW  - vacuum structure
KW  - Higgs model
KW  - finite temperature
KW  - topology
LA  - eng
IS  - 06
M2  - 1195
PY  - 1993
SN  - 0129-1831
SP  - 1195-1204
T2  - International journal of modern physics, C
TI  - Fluctuations of Chern-Simons numbers in the SU(2) Higgs model
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-17844801
Y2  - 2024-11-22T06:37:34
ER  -