Self-consistent Study on Color Transport in the Quark Gluon Plasma at   Finite Chemical Potential
  We calculate the relaxation time self-consistently to study the damping of collective color modes and the color conductivity in a QGP by deriving self-consistent equations for the damping rates of gluons and quarks to leading order QCD by TFD including a chemical potential for quarks. We show that the damping rates are not sensitive to the chemical potential whereas color conductivity is enhanced considerably. 
Hou Defu, Stefan Ochs, and Li Jiarong