Baryon number fluctuations in the 2+1 flavor low energy effective model

Abstract

High order cumulants of the baryon number distribution are calculated in a 2+1 flavor low energy effective model. Quantum fluctuations are encoded through the functional renormalization group approach. The chiral and deconfinement phase transitions are investigated at finite temperature and baryon chemical potential. The equation of state for the QCD matter, fluctuations of the baryon number and the strangeness up to sixth order are calculated, and one finds the results are consistent with those from lattice QCD.

Comments: 17 pages, 13 figures, 2 tables. One figure added and one figure updated, references added. To match the version published in PRD