An extended linear sigma model with delta meson and negative sigma_piN produces a symmetry-energy plateau and stiffer EOS that satisfies neutron-star and nuclear constraints.
A Low-Energy Nucleon-Nucleon Potential from Regge Pole Theory
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Nuclear matter properties and neutron star structures from an extended linear sigma model
An extended linear sigma model with delta meson and negative sigma_piN produces a symmetry-energy plateau and stiffer EOS that satisfies neutron-star and nuclear constraints.