Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10720513 | Nuclear Physics A | 2011 | 21 Pages |
Abstract
The effective interaction in a model space has been calculated by the Krenciglowa-Kuo (KK) and the Lee-Suzuki (LS) iterative methods, both of which assume that the unperturbed energies in the model space are degenerate. We generalize these two methods in a natural and simple manner so that they apply also to non-degenerate model spaces. The key to the generalization is to use the effective hamiltonian instead of the effective interaction in the formulation of iterative schemes. Using test calculations in a simple model, we demonstrate that the new methods work excellently.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Kazuo Takayanagi,