Phase diagram and bulk thermodynamical quantities in the NambuJonaLasinio model at finite temperature and density
Abstract
We reexamine the recent instanton motivated studies of Alford, Rajagopal, and Wilczek, and Berges and Rajagopal in the framework of the standard SU(2) NambuJonaLasinio (NJL) model. The chiral phase diagram is calculated in the temperaturedensity plane, and the pressure is evaluated as the function of the quark density. Obtaining simple approximate relations describing the Tμ and Tp_{F} 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.
 Publication:

Physical Review C
 Pub Date:
 November 1999
 DOI:
 10.1103/PhysRevC.60.055205
 arXiv:
 arXiv:nuclth/9903048
 Bibcode:
 1999PhRvC..60e5205S
 Keywords:

 11.30.Rd;
 12.38.Mh;
 11.10.Wx;
 Chiral symmetries;
 Quarkgluon plasma;
 Finitetemperature field theory;
 Nuclear Theory;
 High Energy Physics  Phenomenology
 EPrint:
 11 pages LaTeX plus 7 PS figures. One figure has been added and there are some changes in the text describing this