Chiral Three-Nucleon Interactions in Light Nuclei, Neutron- α Scattering, and Neutron Matter

J. E. Lynn, I. Tews, J. Carlson, S. Gandolfi, A. Gezerlis, Kevin Schmidt, A. Schwenk

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Abstract

We present quantum Monte Carlo calculations of light nuclei, neutron-α scattering, and neutron matter using local two- and three-nucleon (3N) interactions derived from chiral effective field theory up to next-to-next-to-leading order (N2LO). The two undetermined 3N low-energy couplings are fit to the He4 binding energy and, for the first time, to the spin-orbit splitting in the neutron-α P-wave phase shifts. Furthermore, we investigate different choices of local 3N-operator structures and find that chiral interactions at N2LO are able to simultaneously reproduce the properties of A=3,4,5 systems and of neutron matter, in contrast to commonly used phenomenological 3N interactions.

Original languageEnglish (US)
Article number062501
JournalPhysical Review Letters
Volume116
Issue number6
DOIs
Publication statusPublished - Feb 9 2016

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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