PUB - Publikationen an der Universität Bielefeld

Naively resummed perturbative approximations to the thermodynamic functionsof QCD do not converge at phenomenologically relevant temperatures. Here wereview recent results of a three-loop hard-thermal-loop perturbation theorycalculation of the thermodynamic functions of a quark-gluon plasma for generalN_c and N_f. We show comparisons of our recent results with lattice data fromboth the hotQCD and Wuppertal-Budapest groups. We demonstrate that thethree-loop hard-thermal-loop perturbation result for QCD thermodynamics agreeswith lattice data down to temperatures T ~ 2 T_c.