The equation of state in lattice QCD: With physical quark masses towards the continuum limit

Yasumichi Aoki, Zoltan Fodor, Sandor D. Katz, Kalman K. Szabó

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The equation of state of QCD at vanishing chemical potential as a function of temperature is determined for two sets of lattice spacings. Coarser lattices with temporal extension of Nt=4 and finer lattices of Nt=6 are used. Symanzik improved gauge and stout-link improved staggered fermionic actions are applied. The results are given for physical quark masses both for the light quarks and for the strange quark. Pressure, energy density, entropy density, quark number susceptibilities and the speed of sound are presented.

Original languageEnglish
Pages (from-to)2251-2266
Number of pages16
JournalJournal of High Energy Physics
Issue number1
Publication statusPublished - Apr 10 2006



  • Lattice QCD
  • Thermal Field Theory

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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