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QCD thermodynamics with effective models
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In this talk we extend the Polyakov-quark-meson model to N_f=2+1 quark flavors and study its bulk thermodynamics at finite temperatures in mean-field approximation. Three different Polyakov-loop potentials are considered. Our findings are confronted to recent QCD lattice simulations of the RBC-Bielefeld and HotQCD collaborations. Furthermore, the finite chemical potential expansion of the quark-number susceptibility in a Taylor series around vanishing chemical potential is analyzed. By means of a novel algorithmic differentiation technique, we have calculated Taylor coefficients up to 24th order in the model for the first time. This allows the systematic study of convergence properties of the Taylor series.
Forward citations
Cited by 2 Pith papers
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Comparison of chiral limit studies in curvature mass versus on-shell renormalized quark-meson model using ChPT
Using ChPT scaling of f_pi, f_K, and M_eta^2, the QMVT model yields much smaller first-order regions in the Columbia plot than the on-shell renormalized RQM model, and moderately smaller than the FRG study.
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Comparative analysis of critical regions: The renormalized quark-meson model under Polyakov loop, quark back-reaction, and vector interaction effects
On-shell renormalized quark-meson models give broad, roughly symmetric critical regions around the CEP; the Logarithmic Polyakov loop compresses their temperature width, while the PolyLog-glue back-reaction restores s...
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