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Renormalization Group Summation and the Free Energy of Hot QCD

D. G. C. McKeon·A. Rebhan
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Abstract

Using an approach developed in the context of zero-temperature QCD to systematically sum higher order effects whose form is fixed by the renormalization group equation, we sum to all orders the leading log (LL) and next-to-leading log (NLL) contributions to the thermodynamic free energy in hot QCD. While the result varies considerably less with changes in the renormalization scale than does the purely perturbative result, a novel ambiguity arises which reflects the strong scheme dependence of thermal perturbation theory.

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D. G. C. McKeon, A. Rebhan. 2002-10-14. Renormalization Group Summation and the Free Energy of Hot QCD. https://doi.org/10.1103/physrevd.67.027701

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