Many-body interactions and nuclear structure

TL;DR

This paper discusses challenges in nuclear many-body theory, focusing on the role of many-body forces, discrepancies between theory and experiment, and future research directions in understanding nuclear stability.

Contribution

It presents five case studies, including an idealized model, to highlight key issues and gaps in current nuclear many-body theory and experimental alignment.

Findings

Discrepancies between theoretical predictions and experimental data

Evolution of many-body forces with particle number

Identification of key challenges for future research

Abstract

This article presents several challenges to nuclear many-body theory and our understanding of the stability of nuclear matte r. In order to achieve this, we present five different cases, starting with an idealized toy model. These cases expose problems that need to be understood in order to match recent advances in nuclear theory with current experimental programs in low-energy nuclear physics. In particular, we focus on our current understanding, or lack thereof, of many-body forces, and how they evolve as functions of the number of particles . We provide examples of discrepancies between theory and experiment and outline some selected perspectives for future research directions.