Nonperturbative contributions to the QCD pressure
Abstract
We summarize the most important arguments why a perturbative description of finite-temperature QCD is unlikely to be possible and review various well-established approaches to deal with this problem. Then, using a recently proposed method, we investigate nonperturbative contributions to the QCD pressure and other observables (like energy, anomaly and bulk viscosity) obtained by imposing a functional cutoff at the Gribov horizon. Finally, we discuss how such contributions fit into the picture of consecutive effective theories, as proposed by Braaten and Nieto, and give an outline of the next steps necessary to improve this type of calculation.
Cite
@article{arxiv.0805.3804,
title = {Nonperturbative contributions to the QCD pressure},
author = {Klaus Lichtenegger and Daniel Zwanziger},
journal= {arXiv preprint arXiv:0805.3804},
year = {2008}
}
Comments
15 pages, 13 figures, uses xcolor.sty; in v2 quality of some figures has been improved, discussion of other approaches has been extended