Real-Time Dimensional Reduction in Thermal Field Theory

Details Real-Time Dimensional Reduction in Thermal Field Theory Real-Time Dimensional Reduction in Thermal Field Theory

1998-09-14

arxiv.org/abs/hep-ph/9809378v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, Talk given at TFT98, Regensburg, Germany, August 10-14, 1998 some typos corrected and a discussion on an intermediate

Scientific paper

We consider the extension of static dimensional reduction to real-time. For a scalar field theory it is shown that in the high-temperature limit this leads to an effective classical theory. Quantum corrections to the leading classical behavior are determined by an effective action which can be calculated perturbatively in the background of the classical fields. Feynman rules for (\lambda\phi^4)-theory are given and the extension to SU($N$) gauge theories is outlined.

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