Hard-thermal-loop Resummation of the Free Energy of a Hot Gluon Plasma

Details Hard-thermal-loop Resummation of the Free Energy of a Hot Gluon Plasma Hard-thermal-loop Resummation of the Free Energy of a Hot Gluon Plasma

1999-02-11

arxiv.org/abs/hep-ph/9902327v2

Phys.Rev.Lett. 83 (1999) 2139-2142

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.83.2139

We calculate the free energy of a hot gluon plasma to leading order in hard-thermal-loop perturbation theory. Effects associated with screening, gluon quasiparticles, and Landau damping are resummed to all orders. The ultraviolet divergences generated by the hard-thermal-loop propagator corrections can be cancelled by a temperature-independent counterterm. The deviation of the hard-thermal-loop free energy from lattice QCD results for T > 2 T_c has the correct sign and roughly the correct magnitude to be accounted for by next-to-leading order corrections.

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