Axial U(1) symmetry and Dirac spectra in high-temperature phase of N_f=2 lattice QCD
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 Möbius 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.
- Publication:
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The 36th Annual International Symposium on Lattice Field Theory. 22-28 July
- Pub Date:
- July 2018
- DOI:
- 10.22323/1.334.0152
- arXiv:
- arXiv:1812.06621
- Bibcode:
- 2018slft.confE.152S
- Keywords:
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- High Energy Physics - Lattice
- E-Print:
- 7 pages, 2 figures, talk presented at the 36th International Symposium on Lattice Field Theory (Lattice 2018), 22-28 July, 2018, Michigan, USA