We relate the relativistic finite range mean-field model (RMF-FR) to the point-coupling
variant and compare the nonlinear density dependence. From this, the effective Hamiltonian
of the nonlinear point-coupling model in the nonrelativistic limit is derived. Different from the
nonrelativistic models, the nonlinearity in the relativistic models automatically yields
contributions in the form of a weak density dependence not only in the central potential but
also in the spin–orbit potential. The central potential affects the bulk and surface properties …