First results on QCD thermodynamics with HISQ action

Details First results on QCD thermodynamics with HISQ action First results on QCD thermodynamics with HISQ action

2009-12-30

arxiv.org/abs/0912.5421v1

PoS(LAT2009)163

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 4 figures, talk presented at the XXVII International Symposium on Lattice Field Theory, July 26-31, 2009, Peking Univ

Scientific paper

We report on investigations of the chiral and deconfinement aspects of the finite temperature transition in 2+1 flavor QCD using the Highly Improved Staggered Quark (HISQ) action on lattices with temporal extent $N_\tau=6$ and $N_\tau=8$. We have calculated several physical observables, including the renormalized Polyakov loop, strangeness fluctuations, the renormalized chiral condensate and the chiral susceptibility in the crossover region for physical values of the strange quark mass $m_s$ and light quark masses $m_l=0.2m_s$ and $0.05m_s$. We compare our findings with previous calculations that use different improved staggered fermion formulations: asqtad, p4 and stout.

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