The equation of state for two flavor QCD at N_t=6

Details The equation of state for two flavor QCD at N_t=6 The equation of state for two flavor QCD at N_t=6

1996-12-21

arxiv.org/abs/hep-lat/9612025v1

Phys.Rev.D55:6861-6869,1997

Physics

High Energy Physics

High Energy Physics - Lattice

24 pages, latex, 11 postscipt figures

Scientific paper

10.1103/PhysRevD.55.6861

We calculate the two flavor equation of state for QCD on lattices with lattice spacing a=(6T)^{-1} and find that cutoff effects are substantially reduced compared to an earlier study using a=(4T)^{-1}. However, it is likely that significant cutoff effects remain. We fit the lattice data to expected forms of the free energy density for a second order phase transition at zero-quark-mass, which allows us to extrapolate the equation of state to m_q=0 and to extract the speed of sound. We find that the equation of state depends weakly on the quark mass for small quark mass.

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