Reduced regulator dependence of neutron-matter predictions with chiral interactions

TL;DR

This paper demonstrates that incorporating consistent three-nucleon forces in neutron matter calculations significantly reduces the dependence of energy predictions on the choice of regulator, enhancing the reliability of chiral interaction models.

Contribution

The study shows that including three-nucleon forces aligned with two-nucleon interactions decreases regulator dependence in neutron matter energy calculations.

Findings

Three-nucleon forces reduce regulator dependence

Consistent chiral interactions improve prediction stability

Enhanced reliability of neutron matter models

Abstract

We calculate the energy per particle in infinite neutron matter perturbatively using chiral N3LO two-body potentials plus N2LO three-body forces. The cutoff dependence of the predictions is investigated by employing chiral interactions with different regulators. We find that the inclusion of three-nucleon forces, which are consistent with the applied two-nucleon interaction, leads to a strongly reduced regulator dependence of the results.