Nonlinear sigma, delta derivative self-couplings in a RMFT for neutron stars

摘要

We study dense hadronic matter in a generalized relativistic mean field approach which contains nonlinear couplings of the sigma, omega, rho, delta fields and compare its predictions for properties of neutron stars with the corresponding results from different models found in the literature. Our predictions indicate a substantial modification in static global properties of nuclear matter and neutron stars with the inclusion of the delta meson into the formalism.