Two-Flavor Staggered Fermion Thermodynamics at N_t = 12

Details Two-Flavor Staggered Fermion Thermodynamics at N_t = 12 Two-Flavor Staggered Fermion Thermodynamics at N_t = 12

1996-05-23

arxiv.org/abs/hep-lat/9605028v1

Phys.Rev.D54:4585-4594,1996

Physics

High Energy Physics

High Energy Physics - Lattice

LaTeX 25 pages, 15 Postscript figures

Scientific paper

10.1103/PhysRevD.54.4585

We present results of an ongoing study of the nature of the high temperature crossover in QCD with two light fermion flavors. These results are obtained with the conventional staggered fermion action at the smallest lattice spacing to date---approximately 0.1 fm. Of particular interest are a study of the temperature of the crossover a determination of the induced baryon charge and baryon susceptibility, the scalar susceptibility, and the chiral order parameter, used to test models of critical behavior associated with chiral symmetry restoration. From our new data and published results for N_t = 4, 6, and 8, we determine the QCD magnetic equation of state from the chiral order parameter using O(4) and mean field critical exponents and compare it with the corresponding equation of state obtained from an O(4) spin model and mean field theory. We also present a scaling analysis of the Polyakov loop, suggesting a temperature dependent ``constituent quark free energy.''

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