Armen Sedrakian, Frankfurt Institute for Advanced Studies, Frankfurt am Main, Germany — January 27, 2025

Relativistic density functionals based on baryon-meson Lagrangians can be used to describe effectively dense matter in compact stars including hyperonic, Delta-resonance, and quark degrees of freedom. I will discuss how the mass-radius and tidal deformability inferences constrain the current models of hypernuclear and hybrid stars. I will also discuss the bulk viscosity of dense nucleonic and quark matter in hot compact stars, which emerged in recent years as the leading dissipative channel in binary-neutron star merger simulations.