Ab initio no-core properties of 7Li and 7Be with JISP16 and NNLO_opt interactions

TL;DR

This paper uses ab initio no-core configuration methods to study the properties of 7Li and 7Be nuclei with specific nucleon-nucleon interactions, comparing results with experimental data and other models.

Contribution

It provides new ab initio calculations of 7Li and 7Be properties using JISP16 and NNLO_opt interactions, including energy spectra and electromagnetic observables.

Findings

Reasonable agreement with experimental low-lying states

Effective description of p-shell dominated states

Comparison with models including three-nucleon interactions

Abstract

We investigate the properties of 7Li with the JISP16 and chiral NNLO_opt nucleon-nucleon interactions and 7Be with the JISP16 interaction in the ab initio no-core full configuration (NCFC) approach. We calculate selected observables that include energy spectra, point proton root-mean-square radii, electromagnetic moments and transitions. We compare our results with experimental results, where available, as well as with results obtained using nucleon-nucleon plus three-nucleon interactions. We obtain reasonable agreement between theory and experiment for low-lying states that are dominated by p-shell configurations.