Fluctuations and Correlations of Conserved Charges in the $(2+1)$ Polyakov Quark Meson Model

Details Fluctuations and Correlations of Conserved Charges in the $(2+1)$ Polyakov Quark Meson Model Fluctuations and Correlations of Conserved Charges in the $(2+1)$ Polyakov Quark Meson Model

2012-01-16

arxiv.org/abs/1201.3352v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

figures modified, 14 pages

Scientific paper

We consider the $(2+1)$ flavor Polyakov Quark Meson Model and study the fluctuations (correlations) of conserved charges upto sixth (fourth) order. Comparison is made with lattice data wherever available and overall good qualitative agreement is found, more so for the case of the normalised susceptibilities. The model predictions for the ratio of susceptibilities go to that of an ideal gas of hadrons as in Hadron Resonance Gas Model at low temperatures while at high temperature the values are close to that of an ideal gas of massless quarks. Our study provides a strong basis for the use of PQM as an effective model to understand the topology of the QCD phase diagram.

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