Abstract
We reexamine the intermediate state convergence problem for the core polarization diagram () in the expansion of an effective shell-model interaction using a modern meson exchange Bonn-Jülich potential in comparison to the phenomenological Reid soft-core interaction. The Bonn-Jülich potential contains a much weaker tensor force as compared with the Reid soft-core interaction. As a consequence its repulsive contributions to from high momentum intermediate particle states are much reduced and can be calculated in a good approximation with particle-hole excitations alone. This opens up the possibility of calculating higher order processes in a reliable and expendient way. We have further determined the spectra of and using the folded diagram perturbation theory to determine the effective interaction. The energy levels are best reproduced by the Bonn-Jülich potential.
NUCLEAR STRUCTURE , ; dependence of effective interaction on tensor force. Convergence of intermediate state summation in core polarization.
- Received 22 September 1980
DOI:https://doi.org/10.1103/PhysRevC.23.1765
©1981 American Physical Society