Realistic shell model; 132Sn region; 208Pb region

TL;DR

This paper uses a realistic shell model with a derived effective interaction to study exotic nuclei around 132Sn, revealing similarities with nuclei in the 208Pb region and advancing understanding of nuclear structure.

Contribution

It introduces a shell model approach employing a V-low-k derived from the CD-Bonn potential to analyze nuclei near 132Sn, highlighting structural similarities with 208Pb region nuclei.

Findings

Proton-neutron multiplets in 134Sb and 136Sb show behavior similar to 210Bi and 212Bi.

The effective interaction accurately reproduces experimental multiplet patterns.

The approach demonstrates the usefulness of V-low-k in shell model calculations.

Abstract

We report on a study of exotic nuclei around doubly magic 132Sn in terms of the shell model employing a realistic effective interaction derived from the CD-Bonn nucleon-nucleon potential. The short-range repulsion of the latter is renormalized by constructing a smooth low-momentum potential, V-low-k, that is used directly as input for the calculation of the effective interaction. In this paper, we focus attention on proton-neutron multiplets in the odd-odd nuclei 134Sb, 136Sb. We show that the behavior of these multiplets is quite similar to that of the analogous multiplets in the counterpart nuclei in the 208Pb region, 210Bi and 212Bi.