Axial U(1) symmetry at high temperatures in N_f=2+1 lattice QCD with chiral fermions

2022/03/30 by Sinya Aoki, Aoki, Sinya, Yasumichi Aoki +15
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2203.16059

openalex publication_date 2022/03/30 · openalex created_date 2022/09/13 · openalex updated_date 2026/07/28

Abstract

We study the U(1)_A anomaly in the high-temperature phase of N_f=2+1 lattice QCD with chiral fermions. Gauge ensembles are generated with Möbius 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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