Non-perturbative dynamics of hot non-Abelian gauge fields

Details Non-perturbative dynamics of hot non-Abelian gauge fields Non-perturbative dynamics of hot non-Abelian gauge fields

2000-10-21

arxiv.org/abs/hep-ph/0010249v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, based on talks at Quarks-2000 and SEWM-2000

Scientific paper

The dynamics of high temperature gauge fields, on scales relevant for non-perturbative phenomena such as electroweak baryogenesis, may be described by a remarkably simple effective theory. This theory, which takes the form of a local, stochastic, classical Yang-Mills theory, depends on a single parameter, the non-Abelian (or ``color'') conductivity. This effective theory has recently been shown to be valid to next-to-leading-log order (NLLO), provided one uses an improved NLLO value for the non-Abelian conductivity. Comparisons of numerical simulations using this NLLO effective theory and a more microscopic effective theory agree surprisingly well.

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