Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-10-24
Phys.Rev.C57:1879-1890,1998
Physics
High Energy Physics
High Energy Physics - Phenomenology
20 pages in Latex and 11 Postscript figures
Scientific paper
10.1103/PhysRevC.57.1879
We analyze recent results of SU(3) lattice QCD calculations with a phenomenological parametrization for the quark-gluon plasma equation of state based on a quasi-particle picture with massive quarks and gluons. At high temperature we obtain a good fit to the lattice data using perturbative thermal quark and gluon masses from an improved HTL scheme. At temperatures close to the confinement phase transition the fitted masses increase above the perturbative value, and a non-zero (but small) bag constant is required to fit the lattice data.
Heinz Ulrich
Levai Péter
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