Symmetries of the light hadron spectrum in high temperature QCD
Abstract
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 analyzed previously by various other groups employing different setups. Here we construct suitable operators to investigate chiral and axial $U(1)_A$ symmetries in the baryon spectrum. Measurements for different volumes and quark-masses are done with two flavors of chirally symmetric domain-wall fermions at temperatures above the critical one. The possibility of emergent $SU(4)$ and $SU(2)_{CS}$ symmetries is discussed.
- Publication:
-
37th International Symposium on Lattice Field Theory. 16-22 June 2019. Wuhan
- Pub Date:
- June 2019
- DOI:
- 10.22323/1.363.0227
- arXiv:
- arXiv:1912.00678
- Bibcode:
- 2019slft.confE.227R
- Keywords:
-
- High Energy Physics - Lattice;
- High Energy Physics - Phenomenology
- E-Print:
- 7 pages, 4 figures, talk presented at the 37th International Symposium on Lattice Field Theory (Lattice 2019), 16-22 June 2019, Wuhan, China. Updated numerical data in Fig. 1 and Fig. 2