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arXiv · 0811.4543

Aspects of the phase diagram in (P)NJL-like models

M. Buballa·A. G. Grunfeld·A. E. Radzhabov·D. Scheffler
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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 nonlocal 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 $\mu = 0$ 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 $\mu$-dependent determinant interaction.

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M. Buballa, A. G. Grunfeld, A. E. Radzhabov, D. Scheffler. 2008-11-27. Aspects of the phase diagram in (P)NJL-like models. https://doi.org/10.1016/j.ppnp.2008.12.005

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