Short-range correlations and shell structure of medium-mass nuclei

TL;DR

This paper investigates the impact of short-range correlations on the shell structure of medium-mass nuclei, specifically 133Sb and 101Sn, using advanced perturbation theory and realistic nucleon-nucleon potentials.

Contribution

It demonstrates the importance of short-range correlations in accurately reproducing the shell structure of medium-mass nuclei using V-low-k derived potentials.

Findings

Short-range correlations are crucial for correct shell structure.

The approach reproduces experimental shell features.

Realistic potentials from CD-Bonn are effective.

Abstract

The single-particle spectrum of the two nuclei 133Sb and 101Sn is studied within the framework of the time-dependent degenerate linked-diagram perturbation theory starting from a class of onshell-equivalent realistic nucleon-nucleon potentials. These potentials are derived from the CD-Bonn interaction by using the so-called V-low-k approach with various cutoff momenta. The results obtained evidence the crucial role of short-range correlations in producing the correct 2s1d0g0h shell structure.