Ab Initio Coupled-Cluster Study of 16O

TitleAb Initio Coupled-Cluster Study of 16O
Publication TypeJournal Article
Year of Publication2005
AuthorsWłoch, M, Dean, DJ, Gour, JR, Hjorth-Jensen}, M{, Kowalski, K, Papenbrock, T, Piecuch, P
JournalPhysical Review Letters
Date Published06/2005

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.