Axial U(1) symmetry and mesonic correlators at high temperature in $N_f=2$ lattice QCD

17 Jun 2019, 17:10
20m
Hankou

Hankou

Parallel Nonzero Temperature and Density Nonzero Temperature and Density

Speaker

Dr Kei Suzuki (JAEA)

Description

We measure the connected and disconnected mesonic correlators and
screening masses in the high-temperature phase of $N_f=2$ QCD. Gauge
ensembles are generated with Mobius domain-wall fermions, while the
observables are calculated with a reweighting to achieve more precise
chiral symmetry. We confirm the restoration of axial $U(1)$ symmetry for
small quark masses. At a larger quark mass, the $U(1)_A$ is broken and
long-distance correlations are observed in the isospin singlet channels.

Authors

Dr Kei Suzuki (JAEA) Prof. Sinya Aoki (Yukawa Institute for Theoretical Physics, Kyoto University) Prof. Yasumichi Aoki (RIKEN) Dr Guido Cossu (The University of Edinburgh) Prof. Hidenori Fukaya (Osaka University) Prof. Shoji Hashimoto (KEK) Dr Christian Rohrhofer (Osaka University)

Presentation materials