Free Energy of a Hot Quark-Gluon Plasma
  Thermal (Th-)QCD properties appear to disagree with lattice (L-)QCD results, which suggests that Th-QCD does not have a valid perturbative expansion. However, we reproduce L-QCD using the first order $\alpha_s$ corrections in Th-QCD. 
Salah Hamieh, Jean Letessier, Johann Rafelski, Martin Schroedter, and   Ahmed Tounsi (uni Paris 7 and Univ. of Arizona)