Comparison of two Lindstedt–Poincaré-type perturbation methods
✍ Scribed by H. Hu; Z.G. Xiong
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 417 KB
- Volume
- 278
- Category
- Article
- ISSN
- 0022-460X
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## Abstract Polikanov's perturbation method for the solution of the radial Schrödinger equation is shown to be equivalent to the usual Rayleigh‐Schrödinger method but with __full__ normalization instead of __intermediate__ noralization. The energy corrections are shown to be the same to all orders.
A modified Lindstedt-Poincare´(L-P) method for extending the validity of perturbation expansions to strongly non-linear oscillations of two-degree-of-freedom (DOF) systems is presented. A parameter transformation a = a (o, v0, v1) is adopted such that a strongly non-linear system with a large parame