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.

forces

systems

shift

momentum-space

effective-field theory

scattering data

deuteron

Författare

A. Ekstrom

Universitetet i Oslo

Michigan State University

G. Baardsen

Universitetet i Oslo

Christian Forssen

Chalmers, Teknisk fysik, Subatomär fysik

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 Art. no. 192502- 192502

Ämneskategorier

Subatomär fysik

Fysik

Fundament

Grundläggande vetenskaper

DOI

10.1103/PhysRevLett.110.192502