Vector and axial-vector mesons in nuclear matter

As a first step towards realistic phenomenological description of vector and axial-vector mesons in nuclear matter, we calculate the spectral functions $\rho$ $a_1$ meson chiral baryon-meson model as low-energy effective realization QCD, taking into account effects fluctuations from scalar mesons, nucleons, within Functional Renormalization Group (FRG) approach. The phase diagram hadronic theory exhibits liquid-gas transition well at higher baryon-chemical potential. in-medium are calculated by using previously introduced analytically-continued FRG (aFRG) method. Our results show strong modifications particular near critical endpoints both transitions which may be relevance for electromagnetic rates heavy-ion collisions or neutrino emissivities neutron-star merger events.