A renormalizable theory for not-so-light nuclei
Nuclear Theory
2025-05-15 v1
Abstract
We present an improved action for Pionless Effective Field Theory (EFT). Previous formulations of renormalizable nuclear EFTs have encountered instabilities in systems with more than four nucleons. We resolve this issue by introducing a finite interaction range at leading order, which is compensated for in perturbation theory at next-to-leading order. Calculated ground-state energies of He, Li, C, and O converge and agree with experiment within theoretical uncertainties. This first successful implementation of systematic renormalizability beyond the lightest nuclei enables not only applications to larger nuclei but also extensions to other EFTs in the strong-coupling regime.
Cite
@article{arxiv.2505.09299,
title = {A renormalizable theory for not-so-light nuclei},
author = {L. Contessi and M. Schäfer and A. Gnech and A. Lovato and U. van Kolck},
journal= {arXiv preprint arXiv:2505.09299},
year = {2025}
}