TY - JOUR
T1 - The QCD equation of state with dynamical quarks
AU - Borsányi, Szabolcs
AU - Endrődi, Gergely
AU - Fodor, Zoltán
AU - Jakovác, Antal
AU - Katz, Sándor D.
AU - Krieg, Stefan
AU - Ratti, Claudia
AU - Szabó, Kálmán K.
PY - 2010
Y1 - 2010
N2 - The present paper concludes our investigation on the QCD equation of state with 2 + 1 staggered flavors and one-link stout improvement. We extend our previous study [JHEP 01 (2006) 089] by choosing even finer lattices. Lattices with Nt = 6, 8 and 10 are used, and the continuum limit is approached by checking the results at Nt = 12. A Symanzik improved gauge and a stout-link improved staggered fermion action is utilized. We use physical quark masses, that is, for the lightest staggered pions and kaons we fix the m π/fK and mK/fK ratios to their experimental values. The pressure, the interaction measure, the energy and entropy density and the speed of sound are presented as functions of the temperature in the range 100. .. 1000MeV. We give estimates for the pion mass dependence and for the contribution of the charm quark. We compare our data to the equation of state obtained by the "hotQCD" collaboration.
AB - The present paper concludes our investigation on the QCD equation of state with 2 + 1 staggered flavors and one-link stout improvement. We extend our previous study [JHEP 01 (2006) 089] by choosing even finer lattices. Lattices with Nt = 6, 8 and 10 are used, and the continuum limit is approached by checking the results at Nt = 12. A Symanzik improved gauge and a stout-link improved staggered fermion action is utilized. We use physical quark masses, that is, for the lightest staggered pions and kaons we fix the m π/fK and mK/fK ratios to their experimental values. The pressure, the interaction measure, the energy and entropy density and the speed of sound are presented as functions of the temperature in the range 100. .. 1000MeV. We give estimates for the pion mass dependence and for the contribution of the charm quark. We compare our data to the equation of state obtained by the "hotQCD" collaboration.
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U2 - 10.1007/JHEP11(2010)077
DO - 10.1007/JHEP11(2010)077
M3 - Article
AN - SCOPUS:78649748483
VL - 2010
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
SN - 1126-6708
IS - 11
M1 - 77
ER -