Optimized Chiral Nucleon-Nucleon Interaction at Next-to-Next-to-Leading Order
Journal article, 2013
We optimize the nucleon-nucleon interaction from chiral effective field theory at next-to-next-to-leading order (NNLO). The resulting new chiral force NNLOopt yields chi(2) approximate to 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.
forces
systems
shift
momentum-space
effective-field theory
scattering data
deuteron
Author
A. Ekstrom
Universitetet i Oslo
Michigan State University
G. Baardsen
Universitetet i Oslo
Christian Forssen
Chalmers, Applied Physics, Subatomic Physics
G. Hagen
University of Tennessee, Knoxville
Oak Ridge National Laboratory
M. Hjorth-Jensen
Michigan State University
Universitetet i Oslo
G. R. Jansen
Oak Ridge National Laboratory
University of Tennessee, Knoxville
R. Machleidt
University of Idaho
W. Nazarewicz
Oak Ridge National Laboratory
Uniwersytet Warszawski
University of Tennessee, Knoxville
T. Papenbrock
University of Tennessee, Knoxville
Oak Ridge National Laboratory
J. Sarich
Argonne National Laboratory
S. M. Wild
Argonne National Laboratory
Physical Review Letters
0031-9007 (ISSN) 1079-7114 (eISSN)
Vol. 110 19 Art. no. 192502- 192502Ab initio approach to nuclear structure and reactions (++) (ANSR)
European Commission (FP7) (240603), 2009-12-01 -- 2014-11-30.
Subject Categories (SSIF 2011)
Subatomic Physics
Physical Sciences
Roots
Basic sciences
DOI
10.1103/PhysRevLett.110.192502