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

Abstract

We optimize the nucleon-nucleon interaction from chiral effective field theory at next-to-next-to-leading order (NNLO). The resulting new chiral force $$\textbf{NNLO}_{opt}$$ yields $χ^2 ≈ 1$ 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 $$\textbf{NNLO}_{opt}$$ 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.

Authors:
 [1];  [2];  [3];  [4];  [1];  [5];  [6];  [7];  [5];  [8];  [8]
  1. Univ. of Oslo (Norway). Dept. of Physics and Center of Mathematics for Applications; Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.
  2. Univ. of Oslo (Norway). Dept. of Physics and Center of Mathematics for Applications
  3. Chalmers Univ. of Technology Göteborg (Sweden). Dept. of Fundamental Physics
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
  6. Univ. of Idaho, Moscow, ID (United States). Dept. of Physics
  7. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy; Univ. of Warsaw (Poland). Faculty of Physics
  8. Argonne National Lab. (ANL), Argonne, IL (United States). Mathematics and Computer Science Division
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Idaho, Moscow, ID (United States); Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1565067
Alternate Identifier(s):
OSTI ID: 1102214
Grant/Contract Number:  
AC02-06CH11357; AC05-00OR22725; FG02-03ER41270; FG02-96ER40963; SC0008499
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 110; Journal Issue: 19; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Physics

Citation Formats

Ekström, A., Baardsen, G., Forssén, C., Hagen, G., Hjorth-Jensen, M., Jansen, G. R., Machleidt, R., Nazarewicz, W., Papenbrock, T., Sarich, J., and Wild, S. M. Optimized Chiral Nucleon-Nucleon Interaction at Next-to-Next-to-Leading Order. United States: N. p., 2013. Web. doi:10.1103/physrevlett.110.192502.
Ekström, A., Baardsen, G., Forssén, C., Hagen, G., Hjorth-Jensen, M., Jansen, G. R., Machleidt, R., Nazarewicz, W., Papenbrock, T., Sarich, J., & Wild, S. M. Optimized Chiral Nucleon-Nucleon Interaction at Next-to-Next-to-Leading Order. United States. doi:10.1103/physrevlett.110.192502.
Ekström, A., Baardsen, G., Forssén, C., Hagen, G., Hjorth-Jensen, M., Jansen, G. R., Machleidt, R., Nazarewicz, W., Papenbrock, T., Sarich, J., and Wild, S. M. Tue . "Optimized Chiral Nucleon-Nucleon Interaction at Next-to-Next-to-Leading Order". United States. doi:10.1103/physrevlett.110.192502. https://www.osti.gov/servlets/purl/1565067.
@article{osti_1565067,
title = {Optimized Chiral Nucleon-Nucleon Interaction at Next-to-Next-to-Leading Order},
author = {Ekström, A. and Baardsen, G. and Forssén, C. and Hagen, G. and Hjorth-Jensen, M. and Jansen, G. R. and Machleidt, R. and Nazarewicz, W. and Papenbrock, T. and Sarich, J. and Wild, S. M.},
abstractNote = {We optimize the nucleon-nucleon interaction from chiral effective field theory at next-to-next-to-leading order (NNLO). The resulting new chiral force $\textbf{NNLO}_{opt}$ yields $χ^2 ≈ 1$ 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 $\textbf{NNLO}_{opt}$ 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.},
doi = {10.1103/physrevlett.110.192502},
journal = {Physical Review Letters},
number = 19,
volume = 110,
place = {United States},
year = {2013},
month = {5}
}

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