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HTL Resummation of the Thermodynamic Potential

Andre Peshier
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Abstract

Starting from the Phi-derivable approximation scheme at leading-loop order, the thermodynamical potential in a hot scalar theory, as well as in QED and QCD, is expressed in terms of hard thermal loop propagators. This nonperturbative approach is consistent with the leading-order perturbative results, ultraviolet finite, and, for gauge theories, explicitly gauge-invariant. For hot QCD it is argued that the resummed approximation is applicable in the large-coupling regime, down to almost twice the transition temperature.

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Andre Peshier. 2001-04-03. HTL Resummation of the Thermodynamic Potential. https://doi.org/10.1103/physrevd.63.105004

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