Shell-model calculation with density-dependent interaction for $pf$-shell nuclei

TL;DR

This paper employs density-dependent interactions in shell-model calculations to accurately predict properties of $pf$-shell nuclei, highlighting the importance of the M3Y-P6 functional in reproducing nuclear magicity.

Contribution

It introduces a self-consistent method to determine density-dependent terms in shell-model interactions and compares three different density functionals for nuclear structure predictions.

Findings

Shell-model results agree well with experimental data.

Gogny-D1S and Gogny-GT2 fail to reproduce N=28 magicity.

M3Y-P6 successfully captures the magic number N=28.

Abstract

Shell-model calculations with density-dependent interactions are performed to investigate $pf$-shell nuclei, examining the ground-state energies, low-lying spectra, and $E2$ transition probabilities. The density-dependent terms in the interaction are self-consistently determined using the shell-model wave function for the ground state. We test three density-dependent interactions adapted from density functionals of Gogny-D1S, Gogny-GT2, and M3Y-P6. The shell-model results satisfactorily agree with the experimental data. However, the Gogny-D1S and Gogny-GT2 fail to reproduce the magicity of $N=28$, while it is properly described by the M3Y-P6 functional.