Perturbation expansion of quantum resonance energies

We present new results concerning the theoretical treatment of quantum resonances based on the use of optical potentials and perturbation theory. A new criterion is presented for selecting an optical potential. As a result, a wide class of optical potentials which lead to efficient asymptotic series...

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Bibliographic Details
Published in:Physics letters. A 1997-08, Vol.232 (5), p.362-366
Main Authors: Durand, Ph, Paidarová, I.
Format: Article
Language:English
Subjects:
Optical potentials
Perturbation theory
Quantum resonances
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Summary:We present new results concerning the theoretical treatment of quantum resonances based on the use of optical potentials and perturbation theory. A new criterion is presented for selecting an optical potential. As a result, a wide class of optical potentials which lead to efficient asymptotic series is available. A numerical illustration for two shape resonances show that accurate resonance energies and lifetimes can be obtained from a very small number of real square-integrable functions.
ISSN:0375-9601
1873-2429
DOI:10.1016/S0375-9601(97)00440-4