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arXiv · 2203.02612

Thermal hadron resonances in chiral and $U(1)_A$ restoration

Angel Gómez Nicola·Jacobo Ruiz de Elvira·Andrea Vioque-Rodríguez
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Abstract

We review recent work on thermal resonances and their connection with chiral symmetry and $U(1)_A$ restoration within the QCD phase diagram. In particular, the $f_0(500)$ and $K_0^* (700)$ states generated from $\pi\pi$ and $\pi K$ scattering within Unitarized Chiral Perturbation Theory (ChPT) at finite temperature allow one to describe scalar susceptibilities, which combined with Ward Identities yield interesting conclusions regarding the interplay between chiral and $U(1)_A$ restoration, key to understand the nature of the transition

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Angel Gómez Nicola, Jacobo Ruiz de Elvira, Andrea Vioque-Rodríguez. 2022-03-04. Thermal hadron resonances in chiral and $U(1)_A$ restoration. https://arxiv.org/abs/2203.02612

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