NUMERICALLY INSPIRED NEW VERSION OF DEGENERATE RAYLEIGH-SCHRODINGER PERTURBATION-THEORY

被引:5
|
作者
ZNOJIL, M
机构
[1] Institute of Nuclear Physics, Czechosl. Acad. Sci., Řež near Prague
关键词
D O I
10.1007/BF01597966
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A new form of the degenerate perturbation series is proposed. Its construction is inspired by the standard numerical algorithm of inverse iterations: As input, we only assume knowledge of an approximate non-diagonal propagator matrix at some trial zero-order energy. The convergence and a few other technicalities are illustrated by the anharmonic oscillator. © 1990 Academia, Publishing House of the Czechoslovak Academy of Sciences.
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页码:1065 / 1078
页数:14
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