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Qcd Equation Of State With 2+1 Flavors Of Improved Staggered Quarks, James E. Hetrick, C. Bernard
Qcd Equation Of State With 2+1 Flavors Of Improved Staggered Quarks, James E. Hetrick, C. Bernard
All Faculty Articles - School of Engineering and Computer Science
We report results for the interaction measure, pressure, and energy density for nonzero-temperature QCD with 2+1 flavors of improved staggered quarks. In our simulations, we use a Symanzik improved gauge action and the Asqtad O (a2) improved staggered quark action for lattices with temporal extent Nt = 4 and 6. The heavy quark mass ms is fixed at approximately the physical strange quark mass and the two degenerate light quarks have masses mud ≈ 0.1ms or 0.2ms. The calculation of the thermodynamic observables employs the integral method where energy density and pressure are obtained by integration over the interaction measure.