IFIC seminar: Effective theories and the QCD phase diagram

por Prof. Angel Gómez Nícola (UCM)

martes 17 ene. 2023 12:00 → 14:00 Europe/Madrid

1001-Primera-1-1-1 - Paterna. Seminario (Universe)

I will review recent work on the application of Ward Identities (WI) and Effective Theories in the context of the QCD transition. In particular,  thermal resonances such as $f_0(500)$ and $K_0^*(700)$, generated within Unitarized Chiral Perturbation Theory  scattering at finite temperature, play a key role  regarding  chiral symmetry restoration and its interplay with $U(1)_A$ restoration, a fundamental problem to understand the nature of the transition.  I will concentrate on several observables, such as susceptibilities and screening masses, for which the effective theory framework yields compelling results, in agreement with lattice simulations on the QCD phase diagram.