Hard-thermal-loop QCD thermodynamics. (English) Zbl 1221.81165

Strickland, Michael; Andersen, Jens O.; Leganger, Lars E.; Su, Nan

Prog. Theor. Phys., Suppl. 187, 106-114 (2011).

Summary: Naively resummed perturbative approximations to the thermodynamic functions of QCD do not converge at phenomenologically relevant temperatures. Here we review recent results of a three-loop hard-thermal-loop perturbation theory calculation of the thermodynamic functions of a quark-gluon plasma for general \(N_c\) and \(N_f\). We show comparisons of our recent results with lattice data from both the hotQCD and Wuppertal-Budapest groups. We demonstrate that the three-loop hard-thermal-loop perturbation result for QCD thermodynamics agrees with lattice data down to temperatures \(T \sim 2 T_c\).

MSC:

81V05	Strong interaction, including quantum chromodynamics
82B30	Statistical thermodynamics
82B10	Quantum equilibrium statistical mechanics (general)