Phase transition and thermodynamics of a hot and dense system in a scaled NJL model

Details Phase transition and thermodynamics of a hot and dense system in a scaled NJL model Phase transition and thermodynamics of a hot and dense system in a scaled NJL model

1997-01-30

arxiv.org/abs/nucl-th/9701063v2

Nucl.Phys. A598 (1996) 515-538

Physics

Nuclear Physics

Nuclear Theory

23 pages, LaTeX, uses elsart.sty. This version of the paper includes the figures (ps)

Scientific paper

10.1016/0375-9474(95)00501-3

The chiral phase transition of a hot and dense system of quarks is studied within a modified SU(3) NJL lagrangian that implements the QCD scale anomaly. The u- and s-quark condensates can feel or not the same chiral restoration depending on the considered region of the 3-dimension space T_c(\mu_uc,\mu_sc). The temperature behaviour of the pressure and of the energy and entropy densities of the u- and s-quark system is investigated. At high temperature, the non-vanishing bare s-quark mass only modifies slightly the usual behaviour associated with an ideal quark gas.

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