Cold quarks in medium: an equation of state

Details Cold quarks in medium: an equation of state Cold quarks in medium: an equation of state

2009-11-03

arxiv.org/abs/0911.0654v1

Phys.Rev.C82:035801,2010

Physics

Nuclear Physics

Nuclear Theory

5 pages, 5 figures

Scientific paper

10.1103/PhysRevC.82.035801

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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