Effective Two-loop Thermodynamic Potential with Fermions in the   real-time formalism of thermal field theory
  Within the real-time formalism (RTF) of thermal field theory,we apply the hard thermal loop (HTL) resummation technique to calculating effective two-loop thermodynamic potential in quark-gluon plasma (QGP) and its renormalization. The result with collective effects is obtained, which is valid for an arbitrary number of quark flavors with masses. 
Wang Xin and Li Jiarong