Quark Mass Dependence of the QCD Equation of State on N_tau=8 Lattices

Details Quark Mass Dependence of the QCD Equation of State on N_tau=8 Lattices Quark Mass Dependence of the QCD Equation of State on N_tau=8 Lattices

2008-10-14

arxiv.org/abs/0810.2468v1

PoS LATTICE2008:173,2008

Physics

High Energy Physics

High Energy Physics - Lattice

7 Pages, Talk at the XXVI International Symposium on Lattice Field Theory July 14-19 2008, Williamsburg, Virginia, USA

Scientific paper

We currently perform calculations with an improved staggered fermion action (p4fat3). We use a strange quark mass that has been tuned to its physical value and light quarks of mass m_s/20 on lattices of size 32^3x8. This corresponds to an almost physical light quark mass. We present first results on the low temperature part of the equation of state of QCD. Through comparison with the preliminary hotQCD results on the N_tau=8 equation of state, which have been obtained with twice heavier light quark masses, we can quantify the quark mass dependence of the equation of state in the low temperature regime. We also comment on the quark mass dependence of the equation of state at high temperature.

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