Closed-time path integral formalism and medium effects of nonequilibrium QCD matter

Abstract
We apply the closed-time path integral formalism to study the medium effects of nonequilibrium gluon matter. We derive the medium modified resummed gluon propagator to the one loop level in nonequilibrium in the covariant gauge. The gluon propagator we derive can be used to remove the infrared divergences in the secondary parton collisions to study the thermalization of minijet parton plasma at BNL RHIC and CERN LHC.