Strangeness driven phase transitions in compressed baryonic matter and their relevance for neutron stars and core collapsing supernovae

摘要

We discuss the thermodynamics of compressed baryonic matter with strangeness within non-relativistic meanfield models with effective interactions. The phase diagram of the full baryonic octet under strangeness equilibrium is built and discussed in connection with its relevance for core-collapse supernovae and neutron stars. A simplified framework corresponding to (n, p,Λ)(+e)-mixtures is employed in order to test the sensitivity of the existence of a phase transition on the (poorely constrained) interaction coupling constants and the compatibility between important hyperonic abundances and 2M_⊙ neutron stars.