Axial U(1) symmetry at high temperatures in Nf=2+1 lattice QCD with chiral fermions
Abstract
We study the U(1)A anomaly in the high-temperature phase of Nf=2+1 lattice QCD with chiral fermions. Gauge ensembles are generated with M\"obius domain-wall (MDW) fermions, and in the measurements the determinant is reweighted to that of overlap fermions. We report the results for the overlap Dirac spectrum, U(1)A susceptibility, and topological susceptibility at T=204 and 175 MeV.
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