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"Aspects of the phase diagram in (P)NJL-like models"
M. Buballa, A.G. Grunfeld, A.E. Radzhabov and D. Scheffler
Proc. of the "Heavy-Ion Collisions from the Coulomb Barrier to the Quark-Gluon Plasma - 30th Course, International Workshop on Nuclear Physics", Ettore Majorana Center for Scientific Culture, Erice, Sicily, Italy, September 16-24, 2008.
Progress in Particle and Nuclear Physics 62(2) (2009) 365-370
Abstract
We discuss three applications of NJL- and PNJL-like models to assess aspects of the QCD phase diagram: First, we study the effect of mesonic correlations on the pressure below and above the finite temperature phase transition within a non-local PNJL model beyond the mean-field approximation. Second, we reconstruct the phase boundary of an NJL model from a Taylor expansion of the chiral susceptibility about μ=0 and compare the result with the exact phase boundary. Finally, we demonstrate the realization of the .non-standard scenario. for the critical surface in a three-flavor PNJL model with a μ-dependent determinant interaction.
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