PoS - Proceedings of Science
Volume 334 - The 36th Annual International Symposium on Lattice Field Theory (LATTICE2018) - Nonzero Temperature and Density
Axial U(1) symmetry and Dirac spectra in high-temperature phase of $N_f=2$ lattice QCD
K. Suzuki,* S. Aoki, Y. Aoki, G. Cossu, H. Fukaya, S. Hashimoto on behalf of JLQCD Collaboration
*corresponding author
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Published on: May 29, 2019
Abstract
The axial $U(1)$ symmetry in the high-temperature phase is investigated with $N_f = 2$ lattice QCD simulations.
The gauge ensembles are generated with M\"obius domain-wall fermions, and the overlap/domain-wall reweighting is applied.
We find that the $U(1)_A$ susceptibility evaluated from the spectrum of overlap-Dirac eigenvalues is strongly suppressed in the chiral limit.
We also study its volume dependence.
DOI: https://doi.org/10.22323/1.334.0152
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