SU(3)_f Constraints on Hypernuclear Energy Density Functionals

Abstract

A covariant hyper-nuclear energy density functional (EDF) is derived from in medium nucleon meson vertex functionals, assuring the proper description of nuclear mean-field dynamics. The fundamental SU(3) coupling constants for the mean-field relevant vector (m=V) and scalar (m=S) interactions as functionals of the total baryon density are determined. Scalar and vector potentials and the resulting hyperon mean-fields in asymmetric nuclear matter are constructed and discussed, addressing also effects from three-body interactions. Λ- Σ^0 mixing in asymmetric nuclear through the coupling to the background isovector mean-field is addressed.

6 pages,4 figures, 14th International Conference on Hypernuclear and Strange Particle Physics Conference Proceedings (HYP2022)

References in corpus (3)

• Hyperon mixing and universal many-body repulsion in neutron stars
• In medium T-matrix for nuclear matter with three-body forces - binding energy and single particle properties
• Probing the nuclear equation of state from the existence of a $\sim 2.6M_{\odot }$ neutron star: the GW190814 puzzle