QCD Thermodynamics at Intermediate Coupling
High Energy Physics - Phenomenology
2011-06-21 v2 High Energy Physics - Lattice
Nuclear Theory
Abstract
The weak-coupling expansion of the QCD free energy is known to order g_s^6log{g_s}, however, the resulting series is poorly convergent at phenomenologically relevant temperatures. In this proceedings, I discuss hard-thermal-loop perturbation theory (HTLpt) which is a gauge-invariant reorganization of the perturbative expansion for gauge theories. I review a recent NNLO HTLpt calculation of QCD thermodynamic functions. I show that the NNLO HTLpt results are consistent with lattice data down to temperatures T~2T_c.
Cite
@article{arxiv.1012.3377,
title = {QCD Thermodynamics at Intermediate Coupling},
author = {Nan Su},
journal= {arXiv preprint arXiv:1012.3377},
year = {2011}
}
Comments
3 pages, 2 figures; talk given at the conference "Quark Confinement and the Hadron Spectrum IX", August 30 - September 3, 2010, Madrid, Spain; to appear in the AIP proceedings