Equilibration in Quark Gluon Plasma

Details Equilibration in Quark Gluon Plasma Equilibration in Quark Gluon Plasma

2009-12-21

arxiv.org/abs/0912.4089v1

Indian J.Phys.85:1149-1153,2011

Physics

Nuclear Physics

Nuclear Theory

To be published in the Quark Matter 2008 poster proceedings

Scientific paper

10.1007/s12648-011-0115-6

The hydrodynamic expansion rate of quark gluon plasma (QGP) is evaluated and compared with the scattering rate of quarks and gluons within the system. Partonic scattering rates evaluated within the ambit of perturbative Quantum Choromodynamics (pQCD) are found to be smaller than the expansion rate evaluated with ideal equation of state (EoS) for the QGP. This indicate that during the space-time evolution the system remains out of equilibrium. Enhancement of pQCD cross sections and a more realistic EoS keep the partons closer to the equilibrium.

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