New development of realistic J-matrix inverse scattering NN interaction and ab initio description of light nuclei

TL;DR

This paper presents an ab initio method for describing light nuclei using a realistic JISP16 NN interaction derived from inverse scattering, achieving good convergence without three-nucleon forces.

Contribution

It introduces a new development of the JISP16 NN interaction based on inverse scattering and demonstrates its effectiveness in ab initio nuclear structure calculations.

Findings

Accurate predictions of light nuclei without three-nucleon forces.

Successful convergence in p and sd shells using the new NN interaction.

Enhanced understanding of NN interactions in ab initio models.

Abstract

We discuss the studies of light nuclei in ab initio No-core Full Configuration approach based on extrapolations to the infinite model space of large-scale No-core Shell Model calculations on supercomputers. The convergence at the end of p shell and beginning of the sd shell can be achieved if only reasonable soft enough NN interactions are used. In particular, good predictions are obtained with a realistic JISP16 NN interaction obtained in J-matrix inverse scattering approach and fitted to reproduce light nuclei observables without three-nucleon forces. We discuss the current status of this NN interaction and its recent development.