Surface Delta interaction and properties of medium mass nuclei

The idea of Surface Delta Interaction (SDI) is that because of Pauli principle, the interaction between nucleons is peaked near the surface of the nucleus. The delta potential is short ranged like free NN interaction. It has some interesting properties which makes it a quite “realistic” interaction [1], to use. SDI gives matrix elements which are quite close to empirical matrix elements found from shell model studies [2]. Also this interaction reproduces deformation properties quite well in complex nuclei [3–5]. We compare SDI matrix elements with two modern interactions, namely, JUN45 and Gf5pg9 interaction of Ref. [6] and report some applications to finite nuclei.