Hard-thermal-loop resummation of the free energy of a quark-gluon plasma -art. no. 074016

The quark contribution to the free energy of a hot quark-gluon plasma is ca lculated to leading order in hard-thermal-loop (HTL) perturbation theory. T his method selectively resume higher order corrections associated with plas ma effects, such as screening, quasiparticles, and Landau damping. Comparin g to the weak-coupling expansion of QCD, the error in the one-loop HTL free energy is of order alpha(s), but the large alpha(s)(3/2) correction from Q CD plasma effects is included exactly.