Gauge Fields Out-Of-Equilibrium: A Gauge Invariant Formulation and the Coulomb Gauge

Details Gauge Fields Out-Of-Equilibrium: A Gauge Invariant Formulation and the Coulomb Gauge Gauge Fields Out-Of-Equilibrium: A Gauge Invariant Formulation and the Coulomb Gauge

2001-01-25

arxiv.org/abs/hep-ph/0101281v1

Phys.Rev. D64 (2001) 045003

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 pages, 8 figures

Scientific paper

10.1103/PhysRevD.64.045003

We study the abelian Higgs model out-of-equilibrium in two different approaches, a gauge invariant formulation, proposed by Boyanovsky et al. \cite{Boyanovsky:1996dc} and in the Coulomb gauge. We show that both approaches become equivalent in a consistent one loop approximation. Furthermore, we carry out a proper renormalization for the model in order to prepare the equations for a numerical implementation. The additional degrees of freedom, which arise in gauge theories, influence the behavior of the system dramatically. A comparison with results in the 't Hooft-Feynman background gauge found by us recently, shows very good agreement.

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