English

Glasma Evolution and Bose-Einstein Condensation with Elastic and Inelastic Collisions

Nuclear Theory 2015-11-19 v4 High Energy Physics - Phenomenology High Energy Physics - Theory

Abstract

In this paper we investigate the role of inelastic collisions in the kinetic evolution of a highly overpopulated gluon 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 momentum regime always filling up the infrared modes extremely quickly. This latter effect is found to significantly speed up the emergence of a local thermal distribution in the infrared regime with vanishing local "chemical potential" and thus catalyze the onset of dynamical Bose-Einstein Condensation to occur faster (as compared with the purely elastic case) in the overpopulated Glasma.

Keywords

Cite

@article{arxiv.1303.7214,
  title  = {Glasma Evolution and Bose-Einstein Condensation with Elastic and Inelastic Collisions},
  author = {Xu-Guang Huang and Jinfeng Liao},
  journal= {arXiv preprint arXiv:1303.7214},
  year   = {2015}
}

Comments

V4:34 pages, 12 figures, matches published version

R2 v1 2026-06-21T23:49:54.974Z