Abstract
We study the deconfinement and chiral restoration transitions in the context of non-local PNJL models, considering the impact of the presence of dynamical quarks on the scale parameter appearing in the Polyakov potential. We show that the corresponding critical temperatures are naturally entangled for both zero and imaginary chemical potential, in good agreement with lattice QCD results. We also analyze the Roberge–Weiss transition, which is found to be first order at the associated endpoint.
Highlights
We study the deconfinement and chiral restoration transitions in the context of non-local PNJL models, considering the impact of the presence of dynamical quarks on the scale parameter appearing in the Polyakov potential
We show that the corresponding critical temperatures are naturally entangled for both zero and imaginary chemical potential, in good agreement with lattice QCD results
One of the problems of the standard PNJL model is that once the Polyakov loop (PL) potential is adjusted to reproduce the pure gauge lattice QCD results, it is found [8] that the critical temperature for the chiral and deconfinement transitions at vanishing chemical potential, Tc ≈ 220 MeV, is somewhat too high in comparison with the presently most accepted lattice result, namely Tc = 173(8) MeV for two light flavors [4]
Summary
Deconfinement and chiral restoration in non-local PNJL models at zero and imaginary chemical potential We study the deconfinement and chiral restoration transitions in the context of non-local PNJL models, considering the impact of the presence of dynamical quarks on the scale parameter appearing in the Polyakov potential.
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