Equilibration in quark gluon plasma |
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Authors: | S K Das J Alam and P Mohanty |
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Abstract: | 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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