Crossover phenomena and resonances in quantum systems

Pablo Serra, Sabre Kais, Nimrod Moiseyev

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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
Volume64
Issue number6
DOIs
Publication statusPublished - 2001
Externally publishedYes

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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