Symmetries of the light hadron spectrum in high temperature QCD

17 Jun 2019, 17:30
20m
Hankou

Hankou

Parallel Nonzero Temperature and Density Nonzero Temperature and Density

Speaker

Dr Christian Rohrhofer (Osaka University)

Description

Properties of QCD matter change significantly around the chiral crossover temperature, and the effects on $U(1)_A$ and topological susceptibilities, as well as the meson spectrum have been studied with much care. Baryons and the effect of parity doubling in this temperature range have been studied perviously by various other groups employing different setups. Here we construct suitable operators to investigate chiral and axial $U(1)$ symmetries in the baryon spectrum. Measurements are done with two flavors of chirally symmetric domain-wall fermions at temperatures above the critical one, for different volumes and quark-masses. The possibility of emergent $SU(4)$ and $SU(2)_{CS}$ symmetries will be discussed.

Authors

Dr Christian Rohrhofer (Osaka University) Yasumichi Aoki (RIKEN) Guido Cossu (KEK Tsukuba) Hidenori Fukaya Christof Gattringer (University of Graz) Leonid Glozman Shoji Hashimoto (KEK) Christian Lang Kei Suzuki (Tokyo Institute of Technology)

Presentation materials