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

C. Bernard, T. Burch, C. DeTar, Steven Gottlieb, L. Levkova, U. M. Heller, J. E. Hetrick, R. Sugar, William D Toussaint

Research output: Contribution to journalArticle

91 Citations (Scopus)

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.

Original languageEnglish (US)
Article number094505
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume75
Issue number9
DOIs
StatePublished - May 31 2007

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Equation of State
Quarks
equations of state
quantum chromodynamics
quarks
Energy Density
flux density
mud
Integral Method
Interaction
Gauge
Thermodynamics
interactions
thermodynamics
Simulation
simulation
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

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QCD equation of state with 2+1 flavors of improved staggered quarks. / Bernard, C.; Burch, T.; DeTar, C.; Gottlieb, Steven; Levkova, L.; Heller, U. M.; Hetrick, J. E.; Sugar, R.; Toussaint, William D.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 75, No. 9, 094505, 31.05.2007.

Research output: Contribution to journalArticle

Bernard, C, Burch, T, DeTar, C, Gottlieb, S, Levkova, L, Heller, UM, Hetrick, JE, Sugar, R & Toussaint, WD 2007, 'QCD equation of state with 2+1 flavors of improved staggered quarks', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 75, no. 9, 094505. https://doi.org/10.1103/PhysRevD.75.094505
Bernard, C. ; Burch, T. ; DeTar, C. ; Gottlieb, Steven ; Levkova, L. ; Heller, U. M. ; Hetrick, J. E. ; Sugar, R. ; Toussaint, William D. / QCD equation of state with 2+1 flavors of improved staggered quarks. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2007 ; Vol. 75, No. 9.
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