Phase diagram and bulk thermodynamical quantities in the Nambu–Jona-Lasinio model at finite temperature and density

T. M. Schwarz, S. P. Klevansky, G. Papp

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We reexamine the recent instanton motivated studies of Alford, Rajagopal, and Wilczek, and Berges and Rajagopal in the framework of the standard SU(2) Nambu–Jona-Lasinio (NJL) model. The chiral phase diagram is calculated in the temperature-density plane, and the pressure is evaluated as the function of the quark density. Obtaining simple approximate relations describing the T-μ and [Formula Presented] phase transition lines, we find that the results of the instanton based model and that of the NJL model are identical. The diquark transition line is also given.

Original languageEnglish
Number of pages1
JournalPhysical Review C - Nuclear Physics
Issue number5
Publication statusPublished - Jan 1 1999


ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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