The QCD Phase Diagram for Three Degenerate Flavors and Small Baryon Density

Abstract

We present results for the phase diagram of three flavor QCD for μ_B ~ 500 MeV. Our simulations are performed with imaginary chemical potential μ_I for which the fermion determinant is positive. Physical observables are then fitted by truncated Taylor series and continued to real chemical potential. We map out the location of the critical line T_c(μ_B) with an accuracy up to terms of order (μ_B/T)^6. We also give first results on a determination of the critical endpoint of the transition and its quark mass dependence. Our results for the endpoint differ significantly from those obtained by other methods, and we discuss possible reasons for this.

20 pages, 10 figures. Eqn (20) corrected, increased statistics, more accurate results. Version to appear in Nucl.Phys.B

References in corpus (3)

• The Equation of State for Two Flavor QCD at Non-zero Chemical Potential
• The pressure of QCD at finite temperatures and chemical potentials
• QCD phase diagram at small densities from simulations with imaginary mu

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