Neutron matter: The unitary limit and its far-reaching impact
Nuclear Theory
2023-08-08 v1
Abstract
We explore low-density neutron matter and its behavior in proximity to the unitary limit. To that end, we construct unitary nucleon-nucleon potentials with infinite 1S0 neutron-neutron scattering lengths. We discuss the Berstch parameter in relation to results from ultra-cold atomic gases. Unitarity as a constraint for neutron matter and the symmetry energy has been discussed in the literature. We revisit some of those arguments and emphasize the relevance of keeping a firm link with low-energy nuclear physics for robust predictions of neutron-rich systems. Our predictions are obtained from realistic few-nucleon forces based on chiral effective field theory at N3LO.
Keywords
Cite
@article{arxiv.2308.02745,
title = {Neutron matter: The unitary limit and its far-reaching impact},
author = {Francesca Sammarruca},
journal= {arXiv preprint arXiv:2308.02745},
year = {2023}
}
Comments
10 pages, 6 figures