Comment on and Erratum to "Pressure of Hot QCD at Large N_f"

Abstract

We repeat and correct the recent calculation of the thermodynamic potential of hot QCD in the limit of large number N_f of fermions. The new result for the thermal pressure turns out to agree significantly better with results obtained from perturbation theory at small coupling. For large coupling, a nonmonotonic behaviour is reproduced, but the pressure of the strongly coupled theory does not exceed the free pressure as long as the Landau pole ambiguity remains negligible numerically.

Comments: 9 pages, 3 figures, JHEP3; v2: version accepted for publication in JHEP (title changed, 1 footnote added, 1 reference updated, content otherwise unchanged)