出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We report results for the interaction measure, pressure and energy density for nonzero temperature
QCD with 2+1 avors 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 xed 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.
