Crossover phenomena and resonances in quantum systems

Pablo Serra, Sabre Kais, Nimrod Moiseyev

Research output: Contribution to journalArticle

2 Citations (Scopus)


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.

Original languageEnglish
Article number062502
Pages (from-to)1-6
Number of pages6
JournalPhysical Review A. Atomic, Molecular, and Optical Physics
Issue number6
Publication statusPublished - 2001
Externally publishedYes


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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