N3LO NN interaction adjusted to light nuclei in ab exitu approach

TL;DR

This paper introduces a method to fine-tune a chiral effective field theory NN interaction using phase-equivalent transformations, improving the description of light nuclei without heavily relying on three- and many-nucleon interactions.

Contribution

It presents a novel ab exitu approach to adjust NN interactions via phase-equivalent transformations for better nuclear structure predictions.

Findings

Improved fit to light nuclei binding energies and spectra.

Reduced dependence on three- and many-nucleon interactions.

Reasonable predictions for additional observables.

Abstract

We use phase-equivalent transformations to adjust off-shell properties of similarity renormalization group evolved chiral effective field theory NN interaction (Idaho N3LO) to fit selected binding energies and spectra of light nuclei in an ab exitu approach. We then test the transformed interaction on a set of additional observables in light nuclei to verify that it provides reasonable descriptions of these observables with an apparent reduced need for three- and many-nucleon interactions.