Axial U(1) symmetry at high temperature in 2-flavor lattice QCD
We investigate the axial U(1)A symmetry breaking above the critical temperature in two-flavor lattice QCD. The ensembles are generated with dynamical Möbius domain-wall or reweighted overlap fermions. The U(1)A susceptibility is extracted from the low-modes spectrum of the overlap Dirac eigenvalues....
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2018-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://doi.org/10.1051/epjconf/201817507025 |
| Summary: | We investigate the axial U(1)A symmetry breaking above the critical temperature in two-flavor lattice QCD. The ensembles are generated with dynamical Möbius domain-wall or reweighted overlap fermions. The U(1)A susceptibility is extracted from the low-modes spectrum of the overlap Dirac eigenvalues. We show the quark mass and temperature dependences of U(1)A susceptibility. Our results at T = 220MeV imply that the U(1)A symmetry is restored in the chiral limit. Its coincidence with vanishing topological susceptibility is observed. |
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| ISSN: | 2100-014X |