Ground-state and single-particle energies of nuclei around ^{16}O, ^{40}Ca, and ^{56}Ni from realistic nucleon-nucleon forces

TL;DR

This paper presents ab initio calculations of ground-state and single-particle energies for nuclei around ^{16}O, ^{40}Ca, and ^{56}Ni using realistic nucleon-nucleon forces, demonstrating the effectiveness of the CD-Bonn potential.

Contribution

It introduces a comprehensive ab initio approach for heavy nuclei like ^{56}Ni using the unitary-model-operator method with three-body effects included.

Findings

CD-Bonn potential yields results close to experimental data

Successful calculation of ^{56}Ni as the heaviest nucleus in this framework

Ground-state and single-particle energies are accurately reproduced

Abstract

We perform ab initio calculations for nuclei around ^{16}O, ^{40}Ca, and ^{56}Ni using realistic nucleon-nucleon forces. In particular, ^{56}Ni is computed as the heaviest nucleus in this kind of ab initio calculation. Ground-state and single-particle energies including three-body-cluster effects are obtained within the framework of the unitary-model-operator approach. It is shown that the CD-Bonn nucleon-nucleon potential gives quite good results close to the experimental values for all nuclei in the present work.