Simple examples in singular perturbation theory: Eigenvalues that do not tend to the unperturbed values as the perturbation is switched off
- 1 August 1979
- journal article
- Published by Springer Nature in Lettere al Nuovo Cimento (1971-1985)
- Vol. 25 (17) , 533-538
- https://doi.org/10.1007/bf02776352
Abstract
No abstract availableKeywords
This publication has 7 references indexed in Scilit:
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- Divergence of Perturbation Theory in Quantum ElectrodynamicsPhysical Review B, 1952