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arXiv · 0911.0654

Cold quarks in medium: an equation of state

Thomas Klahn·Craig D. Roberts·Lei Chang·Huan Chen·Yu-Xin Liu
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Abstract

We derive a compact, semi-algebraic expression for the cold quark matter equation of state (EoS) in a covariant model that exhibits coincident deconfinement and chiral symmetry restoring transitions in-medium. Along the way we obtain algebraic expressions for: the number- and scalar-density distributions in both the confining Nambu and deconfined Wigner phases; and the vacuum-pressure difference between these phases, which defines a bag constant. The confining interaction materially alters the distribution functions from those of a Fermi gas and consequently has a significant impact on the model's thermodynamic properties, which is apparent in the EoS.

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Thomas Klahn, Craig D. Roberts, Lei Chang, Huan Chen, Yu-Xin Liu. 2009-11-03. Cold quarks in medium: an equation of state. https://doi.org/10.1103/physrevc.82.035801

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