Xu-Guang Huang, Jinfeng Liao
In this paper we investigate the role of inelastic collision in the kinetic evolution of a highly overpopulated system starting from Glasma-type initial condition. Using the Gunion-Bertsch formula we derive the inelastic collision kernel under the collinear and small angle approximations. With both numerics and analytic analysis, we show that the inelastic process has two effects: globally changing (mostly reducing) the total particle number, while locally at small $p$ always filling up the infrared regime extremely quickly. This latter effect is found to significantly speed up the emergence of local thermal form with vanishing local "chemical potential" and catalyzes the onset of gluon condensation to occur faster (as compared with the purely elastic case) in the overpopulated Glasma.
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http://arxiv.org/abs/1303.7214
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