Recent advances on chiral partners and patterns

Angel Gómez Nicola, Jacobo Ruiz de Elvira, Silvia Ferreres-Solé +1

We review recent results on chiral $SU(2{)}_L\times SU(2{)}_R\approx O(4)$ and $U(1{)}_A$ symmetry restoration in QCD. In particular, we discuss how Ward Identities allow one to derive g…