Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2006-11-24
Phys.Rev.D75:094505,2007
Physics
High Energy Physics
High Energy Physics - Lattice
25 pages, 11 figures, 5 tables; One more figure added. Eq. 11 changed. Some text changes
Scientific paper
10.1103/PhysRevD.75.094505
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 $O(a^2)$ improved staggered quark action for lattices with temporal extent $N_t=4$ and 6. The heavy quark mass $m_s$ is fixed at approximately the physical strange quark mass and the two degenerate light quarks have masses $m_{ud}\approx0.1 m_s$ or $0.2 m_s$. The calculation of the thermodynamic observables employs the integral method where energy density and pressure are obtained by integration over the interaction measure.
Bernard Claude
Burch Tommy
DeTar Carleton
Gottlieb Steven
Heller Urs M.
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