Fluctuations of Chern-Simons numbers in the SU(2) Higgs model
1993
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Abstract: (WSP)
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 (β, κ, λ) = (2.25, 0.27, 0.5) and (8.0, 0.12996, 0.0017235) correspond to masses in lattice units (aσmH, aσmw) 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.- talk: Juelich 1993/06/14
- lattice field theory
- Higgs model
- vacuum state: transition
- finite temperature
- gauge field theory: U(1)
- gauge field theory: SU(2)
- Chern-Simons term
- temperature: effect
- dimension: 2
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