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arXiv · 1411.1253

Equation of State for QCD at finite temperature and density. Resummation versus lattice data

Jens O. Andersen·Najmul Haque·Munshi G. Mustafa·Michael Strickland·Nan Su
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Abstract

The perturbative series for finite-temperature field theories has very poor convergence properties and one needs a way to reorganize it. In this talk, I review two ways of reorganizing the perturbative series for field theories at finite temperature and chemical potential, namely hard-thermal-loop perturbation theory (HTLpt) and dimensional reduction (DR). I will present results for the pressure, trace anomaly, speed of sound and the quark susceptibilities from a 3-loop HTLpt calculation and for the quark susceptibilities using DR at four loops. A careful comparison with available lattice data shows good agreement for a number of physical quantities.

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Jens O. Andersen, Najmul Haque, Munshi G. Mustafa, Michael Strickland, Nan Su. 2014-11-05. Equation of State for QCD at finite temperature and density. Resummation versus lattice data. https://doi.org/10.1063/1.4938592

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