Thermal hadron resonances and Ward identities: results for the QCD phase diagram

Abstract

We review recent work regarding the role of light scalar resonances at finite temperature for chiral symmetry and $U(1{)}_A$ restoration. The results obtained are based on unitarized Chiral Perturbation Theory and Ward Identities and are directly connected with presently open problems within the QCD phase diagram

5 pages, 2 figures. Proceedings of the 20th International Conference on Hadron Spectroscopy and Structure (HADRON2023)