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Gouranga C. Nayak

Gluon Propagator and Magnetic Screening Mass at One Loop Level in Non-Equilibrium QCD

Using closed-time path integral formalism I will show for the first time
that the magnetic screening mass at one loop level in QED and QCD is
non-zero as long as the distribution function is anisotropic in momentum
space. For isotropic distribution function such as the thermal
distribution function the magnetic screening mass at one loop level is
zero which is consistent with finite temperature field theory results. I
will also show that the same non-zero magnetic screening results is also
obtained by using transport equation approach. I will
present a resummed (at one loop level of self energy) gluon propagator
in any arbitary covariant gauge in non-equilibrium in any arbitary moving
frame which can be used in the partonic collision term to study
thermalization of quark-gluon plasma at RHIC and LHC. This resummed gluon
propagator is infrared divergence free both in chromoelectric and
chromomagnetic sector.

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