HTL Perturbation Theory to Two Loops

Details HTL Perturbation Theory to Two Loops HTL Perturbation Theory to Two Loops

2002-05-09

arxiv.org/abs/hep-ph/0205085v1

Phys.Rev. D66 (2002) 085016

Physics

High Energy Physics

High Energy Physics - Phenomenology

57 pages, 5 figures

Scientific paper

10.1103/PhysRevD.66.085016

We calculate the pressure for pure-glue QCD at high temperature to two-loop order using hard-thermal-loop (HTL) perturbation theory. At this order, all the ultraviolet divergences can be absorbed into renormalizations of the vacuum energy density and the HTL mass parameter. We determine the HTL mass parameter by a variational prescription. The resulting predictions for the pressure fail to agree with results from lattice gauge theory at temperatures for which they are available.

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