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QCD Thermodynamics at Intermediate Coupling

Nan, Su
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Abstract

The weak-coupling expansion of the QCD free energy is known to order g{sub s}{sup 6} log g{sub s}, however, the resulting series is poorly convergent at phenomenologically relevant temperatures. In this proceedings, I discuss hard-thermal-loop perturbation theory (HTLpt) which is a gauge-invariant reorganization of the perturbative expansion for gauge theories. I review a recent NNLO HTLpt calculation of QCD thermodynamic functions. I show that the NNLO HTLpt results are consistent with lattice data down to temperatures {approx}2T{sub c}.

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDSCOUPLINGDOCUMENT TYPESENERGYEXPANSIONFIELD THEORIESFREE ENERGYGAUGE INVARIANCEINTERMEDIATE COUPLINGINVARIANCE PRINCIPLESPERTURBATION THEORYPHYSICAL PROPERTIESPROCEEDINGSQUANTUM CHROMODYNAMICSQUANTUM FIELD THEORYRENORMALIZATIONTHERMODYNAMIC PROPERTIESTHERMODYNAMICS

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Nan, Su. 2011-05-23. QCD Thermodynamics at Intermediate Coupling. https://doi.org/10.1063/1.3575078

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