期刊
NUCLEAR PHYSICS A
卷 982, 期 -, 页码 211-214出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysa.2018.10.032
关键词
Lattice QCD; chiral symmetry; phase transition; critical point; universality class
资金
- U.S. Department of Energy, Scientific Discovery through Advance Computing (SciDAC) award Computing the Properties of Matter with Leadership Computing Resources [DE-SC0012704]
- Deutsche Forschungsgemeinschaft (DFG) [CRC-TR 211]
- German Bundesministerium fur Bildung and Forschung [05P15PBCAA]
- Early Career Research Award of the Science and Engineering Research Board of the Government of India
- National Natural Science Foundation of China [11535012, 11775096]
We present here results on the determination of the critical temperature in the chiral limit for (2+1)-flavor QCD. We propose two novel estimators of the chiral critical temperature where quark mass dependence is strongly suppressed compared to the conventional estimator using pseudo-critical temperatures. We have used the HISQ/tree action for the numerical simulation with lattices with three different temporal extent N-tau = 6, 8, 12 and varied the aspect ratio over the range 4 <= N-sigma/N-tau <= 8. To approach the chiral limit, the light quark mass has been decreased keeping the strange quark mass fixed at its physical value. Our simulations correspond to the range of pion masses, 55 MeV <= m(pi) <= 160 MeV.
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