High-precision nuclear forces from chiral EFT: State-of-the-art, challenges and outlook

TL;DR

This paper reviews the latest developments in deriving high-precision nuclear forces using chiral effective field theory, emphasizing the semilocal regularization method, challenges, and future outlook.

Contribution

It introduces a new semilocal regularization approach in chiral EFT and discusses its implications for high-precision nuclear force calculations and related challenges.

Findings

Semilocal regularization improves consistency in chiral EFT.

Identifies key challenges in developing accurate many-body nuclear forces.

Highlights the importance of symmetry constraints after regularization.

Abstract

We review a new generation of nuclear forces derived in chiral effective field theory using the recently proposed semilocal regularization method. We outline the conceptual foundations of nuclear chiral effective field theory, discuss all steps needed to compute nuclear observables starting from the effective chiral Lagrangian and consider selected applications in the two- and few-nucleon sectors. We highlight key challenges in developing high-precision tree-body forces, such as the need to maintain consistency between two- and many-body interactions and constraints placed by the chiral and gauge symmetries after regularization.