Reduced regulator dependence of neutron-matter predictions with chiral interactions

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.

7 pages, 8 figures, 1 table, to be published in Physical Review C

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