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- Título:
- Zel'dovich's method of perturbation theory in quantum mechanics
- Universidade de São Paulo (USP)
- McMaster Univ
- Universidade Estadual Paulista (UNESP)
- 0305-4470
- Many years ago Zel'dovich showed how the Lagrange condition in the theory of differential equations can be utilized in the perturbation theory of quantum mechanics. Zel'dovich's method enables us to circumvent the summation over intermediate states. As compared with other similar methods, in particular the logarithmic perturbation expansion method, we emphasize that this relatively unknown method of Zel'dovich has a remarkable advantage in dealing with excited stares. That is, the ground and excited states can all be treated in the same way. The nodes of the unperturbed wavefunction do not give rise to any complication.
- 21-Jan-2000
- Journal of Physics A-mathematical and General. Bristol: Iop Publishing Ltd, v. 33, n. 2, p. 283-292, 2000.
- 283-292
- Iop Publishing Ltd
- http://dx.doi.org/10.1088/0305-4470/33/2/305
- Acesso restrito
- outro
- http://repositorio.unesp.br/handle/11449/23466
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