Comments on quasiparticle models of quark-gluon plasma

Details Comments on quasiparticle models of quark-gluon plasma Comments on quasiparticle models of quark-gluon plasma

2006-08-21

arxiv.org/abs/hep-ph/0608232v3

Phys.Lett.B647:271-274,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 2 figure, article (revised)

Scientific paper

10.1016/j.physletb.2007.02.030

Here we comment on the thermodynamic inconsistency problem and the reformulation of statistical mechanics of widely studied quasiparticle models of quark-gluon plasma. Their starting relation, the expression for pressure itself is a wrong choice and lead to thermodynamic inconsistency and the requirements of the reformulation of statistical mechanics. Hence we revise the model using the standard statistical mechanics and is thermodynamically consistent. We also show that the other quasiparticle models may be obtained from our general formalism as a special case under certain restrictive condition. Further, as an example, we applied our model to explain the nonideal behaviour of gluon plasma and obtained a remarkable good fit to the lattice results by adjusting just a single parameter.

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