Using the finite size scaling (FSS) method originally developed for the studies of critical phenomena in statistical mechanics, the branch points characteristic parameters of the energy spectrum of a model Hamiltonian were calculated. It was found that for a model potential that has served as a test case for resonance theories and computational algorithms, the transition of a bound state to a resonance state is via two types of virtual states. Within the framework of the finite basis-set approach, the narrow resonances were obtained via one direct bound/resonance-state transition mechanism.
|Number of pages||6|
|Journal||Physical Review A. Atomic, Molecular, and Optical Physics|
|Publication status||Published - 2001|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics