Ab-initio coupled-cluster study of 16O.
We report converged results for the ground and excited states and matter density of 16O using realistic two-body nucleon-nucleon interactions and coupled-cluster methods and algorithms developed in quantum chemistry. Most of the binding is obtained with the coupled-cluster singles and doubles approach. Additional binding due to three-body clusters (triples) is minimal. The coupled-cluster method with singles and doubles provides a good description of the matter density, charge radius, charge form factor, and excited states of a one-particle, one-hole nature, but it cannot describe the first-excited 0(+) state. Incorporation of triples has no effect on the latter finding.
Włoch
M
M
Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA.
Dean
D J
DJ
Gour
J R
JR
Hjorth-Jensen
M
M
Kowalski
K
K
Papenbrock
T
T
Piecuch
P
P