Symmetries of meson correlators in high temperature QCD with physical $(u/d,s,c)$ domain-wall quarks

Abstract

The correlation function of meson interpolators in $N_f=2+1+1$ lattice QCD with optimal domain-wall quarks at the physical point are studied for six temperatures in the range $T\sim$ 190-770 MeV. The meson interpolators include a complete set of Dirac bilinears, and each for six combinations of quark flavors. In this paper, we focus on the meson correlators of $u$ and $d$ quarks, and discuss their implications for the effective restoration of $U(1{)}_A$ and $SU(2{)}_L\times SU(2{)}_R$ chiral symmetries, as well as the emergence of the approximate $SU(2{)}_{CS}$ chiral spin symmetry.

Comments: 44 pages, v2: published version