QCD Thermodynamics at Intermediate Coupling
The weak-coupling expansion of the QCD free energy is known to order g{sub s}{sup 6} log g{sub 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 {approx}2T{sub c}.
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗