Ground state properties of exotic nuclei in a relativistic point coupling model

摘要

We present first results in the calculation of ground state properties of exotic nuclei in a relativistic Hartree approximation. Our model consists of four-, six-, and eight-fermion point couplings in a manifestly non-renormalizable Lagrangian, which also contains derivative terms to simulate the finite ranges of the mesonic interactions. The densities appearing in the corresponding mean nucleon fields are of scalar and vector character each having isoscalar and isovector components. No explicit mean meson fields appear in our model.