Phase diagram of neutron-rich nuclear matter and its impact on astrophysics

摘要: Dense matter as it can be found in core-collapse supernovae and neutron stars is expected to exhibit different phase transitions which impact the composition equation of state, with important consequences on dynamics supernova explosion structure stars. In this paper we will address specific phenomenology two such transitions, namely crust-core solid-liquid transition at sub-saturation density, possible strange super-saturation density presence hyperonic degrees freedom. Concerning star zero finite temperature, shown that, a consequence long-range Coulomb interactions, equivalence statistical ensembles violated clusterized not accessible grand-canonical ensemble. A quasi-particle model introduced illustrate anomalous thermodynamics some quantitative results relevant for shown. The opening freedom higher densities corresponding core modifies state. general characteristics order regime analyzed framework self-consistent mean-field approach.