The impact of charge symmetry and charge independence breaking on the   properties of neutrons and protons in isospin-asymmetric nuclear matter
  We investigate the effects of charge independence and charge symmetry breaking in neutron-rich matter. We consider neutron and proton properties in isospin-asymmetric matter at normal densities as well as the high-density neutron matter equation of state and the bulk properties of neutron stars. We find charge symmetry and charge independence breaking effects to be very small. 
F. Sammarruca, L. White, and B. Chen
nucl-th