227 research outputs found
Single parameter quasi-particle model for QGP
We discuss a new single parameter quasi-particle model and study the
thermodynamics of (2+1)-flavor quark gluon plasma (QGP). Our model with a
single parameter explains remarkably well the lattice simulation results of
Fodor et. al. Phys. Lett. B568, 73 (2003).Comment: 9 pages, 3 figures, articl
Comments on quasiparticle models of quark-gluon plasma
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.Comment: 7 pages, 2 figure, article (revised
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