Constraints on the Moment of Inertia of a Proto Neutron Star from the Hyperon Coupling Constants

摘要

The influence of the hyperon coupling constants on the moment of inertia of a proto neutron star has been investigated within the framework of relativistic mean field theory for the baryon octet {n, p, Λ, Σ -, Σ ~0, Σ ~+, Ξ -,Ξ ~0} system. It is found that for a proto neutron star, the mass, the moment of inertia and their own maximum values as a function of radius R or M/R are all more sensitive to the hyperon coupling constants. For all the different hyperon coupling constants mentioned, the case of no hyperons corresponds to the largest moment of inertia.