A particular third-order diagram which contributes to the effective two-body interaction in mass-18 nuclei is computed up to intermediate excitations of 26. We find that our results have not converged by 26 and that the slow decrease in the higher-lying contributions is mainly due to the strong short-range repulsion in the central components of the nucleon-nucleon force. NUCLEAR STRUCTURE Theory, effective interaction mass-18; convergence intermediate-state summation in third order to 26; effects of tensor and hard-core components of nuclear force.
ASJC Scopus subject areas
- Nuclear and High Energy Physics