Optimized Chiral Nucleon-Nucleon Interaction at Next-to-Next-to-Leading Order
Artikel i vetenskaplig tidskrift, 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.
effective-field theory
scattering data
systems
deuteron
forces
momentum-space
shift
Författare
A. Ekstrom
Universitetet i Oslo
Michigan State University
G. Baardsen
Universitetet i Oslo
Christian Forssen
Chalmers, Teknisk fysik, Subatomär fysik
G. Hagen
Oak Ridge National Laboratory
University of Tennessee
M. Hjorth-Jensen
Michigan State University
Universitetet i Oslo
G. R. Jansen
University of Tennessee
Oak Ridge National Laboratory
R. Machleidt
University of Idaho
W. Nazarewicz
Uniwersytet Warszawski
University of Tennessee
Oak Ridge National Laboratory
T. Papenbrock
University of Tennessee
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)
Europeiska kommissionen (EU) (EC/FP7/240603), 2009-12-01 -- 2014-11-30.
Ämneskategorier
Subatomär fysik
Fysik
Fundament
Grundläggande vetenskaper
DOI
10.1103/PhysRevLett.110.192502