Real-Time Dimensional Reduction in Thermal Field Theory
High Energy Physics - Phenomenology
2007-05-23 v2
Abstract
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() gauge theories is outlined.
Keywords
Cite
@article{arxiv.hep-ph/9809378,
title = {Real-Time Dimensional Reduction in Thermal Field Theory},
author = {Bert-Jan Nauta and Chris van Weert},
journal= {arXiv preprint arXiv:hep-ph/9809378},
year = {2007}
}
Comments
6 pages, Talk given at TFT98, Regensburg, Germany, August 10-14, 1998 some typos corrected and a discussion on an intermediate cut-off added