Pade approximants and Rayleigh-Schrodinger perturbation theory
- 28 June 1978
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 11 (12) , 2053-2060
- https://doi.org/10.1088/0022-3700/11/12/006
Abstract
The application of Pade approximants in Rayleigh-Schrodinger perturbation theory is interpreted as making use of the freedom of choice for the orthogonality integrals between the unperturbed (zero-order) wavefunction and the higher-order wavefunctions. With this interpretation, approximants are found for the wavefunction as well as the energy and these provide more satisfactory wavefunctions than are given by the perturbation series itself.Keywords
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