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arXiv · 2012.04991

Thermodynamics from the quark condensate

Philipp Isserstedt·Christian S. Fischer·Thorsten Steinert
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Abstract

We present a method to compute thermodynamic quantities within functional continuum frameworks that is independent of the employed truncation. As a proof of principle, we first apply it to a Nambu-Jona-Lasinio model in mean-field approximation. Then, we use the method with solutions obtained from a coupled set of truncated Dyson-Schwinger equations for the quark and gluon propagators of (2+1)-flavor quantum chromodynamics in Landau gauge to obtain the pressure, entropy density, energy density, and interaction measure across the phase diagram of strong-interaction matter. We also discuss the limitation of the proposed method.

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Philipp Isserstedt, Christian S. Fischer, Thorsten Steinert. 2020-12-09. Thermodynamics from the quark condensate. https://doi.org/10.1103/physrevd.103.054012

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