Elementary solutions of the quantum planar two-center problem
[EN] The quantum problem of an electron moving in a plane under the field created by two Coulombian centers admits simple analytical solutions for some particular intercenter distances. These elementary eigenfunctions, akin to those found by Demkov for the analogous three-dimensional problem, are ca...
| Autores: | , , |
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| Tipo de documento: | artigo |
| Data de publicação: | 2016 |
| País: | España |
| Recursos: | Universidad de Salamanca (USAL) |
| Repositório: | GREDOS. Repositorio Institucional de la Universidad de Salamanca |
| OAI Identifier: | oai:gredos.usal.es:10366/133139 |
| Acesso em linha: | http://hdl.handle.net/10366/133139 https://doi.org/10.1209/0295-5075/114/30007 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Solutions of wave equations: bound states Mathematical physics Integrable systems Calculations and mathematical techniques in atomic and molecular physics |
| Resumo: | [EN] The quantum problem of an electron moving in a plane under the field created by two Coulombian centers admits simple analytical solutions for some particular intercenter distances. These elementary eigenfunctions, akin to those found by Demkov for the analogous three-dimensional problem, are calculated using the framework of quasi-exact solvability of a pair of entangled ODE's descendants from the Heun equation. A different but interesting situation arises when the two centers have the same strength. In this case completely elementary solutions do not exist. |
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