Diagrammatic analysis of adiabatic and time-independent perturbation theory for degenerate energy levels
β Scribed by M.A.J. Michels; L.G. Suttorp
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 336 KB
- Volume
- 58
- Category
- Article
- ISSN
- 0009-2614
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π SIMILAR VOLUMES
Let R be a local perturbation of the n-dimensional domain R, = R"x (0, n). In a previous papers we have introduced the notion of an admissible standing wave. We shall prove that the principle of limiting absorption holds for the Dirichlet problem of the reduced wave equation in R at o t 0 if R does
We introduce a generalization of Wick-ordering which maps the anharmonic oscillator (AO) Hamiltonian for mass m and coupling h exactly into a "Wick-ordered" Hamiltonian with an effective mass M which is a simple analytic function of h and m. The effective coupling rl = X/M3 is bounded. We transform