Speaker
Description
Strangeness provides a unique bridge between laboratory hypernuclear physics and the composition of neutron star (NS) interiors. In this talk, I will present a microscopic study of dense matter containing Λ hyperons within the lowest-order constrained variational (LOCV) framework, using realistic spin- and parity-dependent ΛN and ΛΛ potentials constrained by available hypernuclear data. Building on our previous investigation of the hyperonic equation of state and NS structure, I will discuss new results for the momentum-dependent single-particle potentials of nucleons and Λ hyperons, including their decomposition into the underlying NΛ and ΛΛ contributions and relevant interaction channels. These results provide a direct microscopic view of how density, composition, and uncertainties in hyperonic potentials govern the in-medium behavior of hyperons. I will finally discuss how these microscopic findings can be connected with modern multimessenger constraints on NS matter.