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

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arxiv 0811.4543 v1 pith:ZPJERU7D submitted 2008-11-27 hep-ph nucl-th

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

classification hep-ph nucl-th
keywords phasemodelaspectsboundarydiagrammodelspnjlabove
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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  1. Effective QCD model with consistent quasi-gluon treatment : formulation and application

    hep-ph 2026-06 unverdicted novelty 5.0

    Reformulation of the PNJL model with gluon quasi-particles treated beyond saddle-point approximation to yield a consistent quasiparticle description of QCD thermodynamics.