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 ƒ0 (500) and K∗ 0 (700) states generated from ππ and πK 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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