| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1868110 | Physics Letters A | 2006 | 6 Pages |
Abstract
The usefulness of Møller-Plesset perturbation theory, a standard technique of quantum chemistry, is determined by singularities in the corresponding energy function in the complex plane of the perturbation parameter. A method is developed that locates singularities from fourth-order perturbation series, using quadratic approximants with bilinear conformal mappings.
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Physical Sciences and Engineering
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Physics and Astronomy (General)
Authors
David Z. Goodson, Alexey V. Sergeev,