Abstract
The energies and widths of resonance states are determined by the analytic continuation of bound-state energies as functions of a potential strength parameter (“the coupling constant”). Various numerical examples show the applicability of the method to systems decaying to two- and three-body channels. The examples include unbound states of the nuclei and described in and microscopic cluster models. Some states considered are controversial. Here they are well defined, and their questionable features are understood to arise from their proximity to the complex-energy region of unphysical resonances with negative energies and positive widths.
- Received 20 July 1998
DOI:https://doi.org/10.1103/PhysRevC.59.1391
©1999 American Physical Society