Nonperturbative contributions to the QCD pressure

Details Nonperturbative contributions to the QCD pressure Nonperturbative contributions to the QCD pressure

2008-05-26

arxiv.org/abs/0805.3804v2

Phys.Rev.D78:034038,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 13 figures, uses xcolor.sty; in v2 quality of some figures has been improved, discussion of other approaches has bee

Scientific paper

10.1103/PhysRevD.78.034038

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.

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