QCD equation of state with 2+1 flavors of improved staggered quarks

Department

Data Science

Document Type

Article

Publication Title

Physical Review. D, Particles, Fields, Gravitation and Cosmology

ISSN

0556-2821

Volume

75

Issue

9

DOI

10.1103/PhysRevD.75.094505

First Page

1

Last Page

25

Publication Date

5-1-2007

Abstract

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.

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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