Speaker
Prof.
Angel Gómez Nicola
(Universidad Complutense de Madrid)
Description
We review recent work on Ward Identities (WI) and Effective Theories within the context of the QCD transition at finite temperature. On the one hand, WI allow to obtain generic results on the interplay between chiral and $U(1)_A$ restoration, key to understand the nature of the transition, as well as scaling laws verified by lattice screening masses. On the other hand, thermal resonances $f_0(500)$ and $K_0^*(700)$ generated within Unitarized Chiral Perturbation Theory (ChPT) scattering at finite temperature allow to describe scalar susceptibilities around chiral and $O(4)\times U(1)_A$ restoration, in good agreement with lattice results.
Primary author
Prof.
Angel Gómez Nicola
(Universidad Complutense de Madrid)
Co-authors
Dr
Jacobo Ruiz de Elvira
(ITP, Bern U.)
Ms
Andrea Vioque-Rodríguez
(Universidad Complutense Madrid)
