QCD plasma instability and thermalisation at heavy ion collisions

Details QCD plasma instability and thermalisation at heavy ion collisions QCD plasma instability and thermalisation at heavy ion collisions

2007-11-13

arxiv.org/abs/0711.1963v1

PoSLAT2007:220,2007

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, contribution to Lattice 2007, Regensburg, Germany, 30 July - 4 August 2007

Scientific paper

Under suitable non-equilibrium conditions QCD plasma can develop plasma instabilities, where some modes of the plasma grow exponentially. It has been argued that these instabilities can play a significant role in the thermalisation of the plasma in heavy-ion collision experiments. We study the instability in SU(2) plasmas using the hard thermal loop effective lattice theory, which is suitable for studying real-time evolution of long wavelength modes in the plasma. We observe that under suitable conditions the plasma can indeed develop an instability which can grow to a very large magnitude, necessary for the rapid thermalisation in heavy-ion collisions.

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