期刊
PHYSICAL REVIEW LETTERS
卷 123, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.123.062002
关键词
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资金
- Deutsche Forschungsgemeinschaft (DFG) [315477589-TRR 211]
- German Bundesministerium fur Bildung und Forschung [05P15PBCAA, 05P18PBCA1]
- National Natural Science Foundation of China [11775096, 11535012]
- U.S. Department of Energy
- Office of Science, Advanced Scientific Computing Research and Nuclear Physics
- DOE Office of Nuclear Physics
- Science and Engineering Research Board of the Government of India
- PRACE grant at CSCS, Switzerland
- PRACE grant at CINECA, Italy
- Gauss Centre for Supercomputing
- NIC-Julich, Germany
- Scientific Discovery through Advanced Computing (SciDAC) program - U.S. Department of Energy
We present a lattice-QCD-based determination of the chiral phase transition temperature in QCD with two degenerate, massless quarks and a physical strange quark mass using lattice QCD calculations with the highly improved staggered quarks action. We propose and calculate two novel estimators for the chiral transition temperature for several values of the light quark masses, corresponding to Goldstone pion masses in the range of 58 MeV less than or similar to m(pi) less than or similar to 163 MeV. The chiral phase transition temperature is determined by extrapolating to vanishing pion mass using universal scaling analysis. Finite-volume effects are controlled by extrapolating to the thermodynamic limit using spatial lattice extents in the range of 2.8-4.5 times the inverse of the pion mass. Continuum extrapolations are carried out by using three different values of the lattice cutoff, corresponding to lattices with temporal extents N-tau = 6, 8, and 12. After thermodynamic, continuum, and chiral extrapolations, we find the chiral phase transition temperature T-c(0) = 132(-6)(+3) MeV.
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