Optimized Chiral Nucleon-Nucleon Interaction at Next-to-Next-to-Leading Order

Journal Article · Tue Jan 01 00:00:00 EST 2013 · Physical Review Letters

OSTI ID:1092356

Nazarewicz, Witold ^[1]; Hagen, Gaute ^[1]; Papenbrock, T. ^[2]; Sarich, J. ^[3]; Wild, S. ^[3]; Baardsen, G. ^[4]; Hjorth-Jensen, Morten ^[1]; Jansen, G. R. ^[5]; Machleidt, R. ^[6]

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1. ORNL
2. University of Tennessee (UTK) and Oak Ridge National Laboratory (ORNL)
3. Argonne National Laboratory (ANL)
4. University of Oslo, Norway
5. UTK/ORNL
6. University of Idaho

We optimize the nucleon-nucleon interaction from chiral effective field theory at next-to-next-toleading order (NNLO). The resulting new chiral force NNLOopt yields 2 1 per degree of freedom for laboratory energies below approximately 125 MeV. In the A 3, 4 nucleon systems, the contributions of three-nucleon forces are smaller than for previous parametrizations of chiral interactions. We use NNLOopt to study properties of key nuclei and neutron matter, and we demonstrate that many aspects of nuclear structure can be understood in terms of this nucleon-nucleon interaction, without explicitly invoking three-nucleon forces.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1092356
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters
• Country of Publication: United States
• Language: English