Analysis of the Dynamical Chiral Symmetry Breaking in QCD at Finite   Temperature and Density using the Non-Perturbative Renormalization Group
  We analyze the Nambu--Jona-Lasinio model which is a chiral effective model of QCD by using the non-perturbative renormalization group at finite temperature and finite density. We discuss the chiral phase diagram in the model. We include the large-$N$ non-leading contribution in the beta function and discuss its effects for the phase boundary. 
Ken-Ichi Aoki, Daisuke Sato and Masatoshi Yamada
hep-ph