期刊
PHYSICAL REVIEW D
卷 81, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.81.054504
关键词
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资金
- U.S. Department of Energy [DE-AC02-98CH10886, DE-FG0292ER40699]
- Bundesministerium fur Bildung und Forschung [06BI401]
- Gesellschaft fur Schwerionenforschung
- Helmholtz Alliance [HA216/EMMI]
- Deutsche Forschungsgemeinschaft [GRK 881]
We calculate the QCD equation of state for temperatures corresponding to the transition region with physical mass values for two degenerate light quark flavors and a strange quark using an improved staggered fermion action (p4-action) on lattices with temporal extent N-tau = 8. We compare our results with previous calculations performed at twice larger values of the light quark masses as well as with results obtained from a resonance gas model calculation. We also discuss the deconfining and chiral aspects of the QCD transition in terms of renormalized Polyakov loop, strangeness fluctuations, and subtracted chiral condensate. We show that compared to the calculations performed at twice larger value of the light quark mass the transition region shifts by about 5 MeV toward smaller temperatures.
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