Thermalization and Bose-Einstein Condensation in Overpopulated Glasma

Abstract

We report recent progress on understanding the thermalization of the quark-gluon plasma during the early stage in a heavy ion collision. The initially high overpopulation in the far-from-equilibrium gluonic matter ("Glasma") is shown to play a crucial role. The strongly interacting nature (and thus fast evolution) naturally arises as an {\em emergent property} of this pre-equilibrium matter where the intrinsic coupling is weak but the highly occupied gluon states coherently amplify the scattering. A possible transient Bose-Einstein Condensate is argued to form dynamically on a rather general ground. We develop a kinetic approach for describing its evolution toward thermalization, and based on that we find approximate scaling solutions as well as numerically study the onset of condensation.

4 pages, 3 figures. Contribution to the proceedings of Quark Matter 2012, August 13-18, 2012, Washington DC

References in corpus (3)

• UV Cascade in Classical Yang-Mills Theory
• Turbulent thermalization of weakly coupled non-abelian plasmas
• The non-linear Glasma

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