Transport coefficients of gluonic fluid

The shear (eta) and bulk (zeta) viscous coefficients have been evaluated for a gluonic fluid. The elastic, gg -> gg and the inelastic, number nonconserving, gg -> ggg processes have been considered as the dominant perturbative processes in evaluating the viscous coefficients to entropy density (s) ratios. Recently the processes: gg -> ggg has been revisited and a correction to the widely used Gunion-Bertsch (GB) formula has been obtained. The eta and zeta have been evaluated for gluonic fluid with the formula recently derived. At large alpha(s) the value of eta/s approaches its lower bound, similar to 1/4 pi.