Kinetic-theory approach to Gluon Self-energy beyond Hard Thermal Loops

Abstract

We compare the effective dynamics of soft fields, based on temperature field theory, with the mean field dynamics from non-Abelian kinetic theory. We derive the polarization tensor with the leading logarithmic factor $\log (\frac{gT}{\mu })$ from the effective Boltzmann-Langevin equation given by Litim and Manuel. The tensor is identical with effective one-loop contributions within the hard thermal loop effective theory.

Comments: 9 pages,2 figures