Abstract
Quantum mechanical perturbation theory is discussed in terms of solutions
W
of commutator equations of the type [
h
,
W
] =
A
. The operators
W
lead to perturbation corrections for any eigenstate of the unperturbed system. The theory is illustrated by considering the linear harmonic oscillator perturbed by the
N
th power of the displacement.
Reference4 articles.
1. H irschfelder J . O. Byers Brown W . & E pstein S. T. 1964 A dv. quantum Chem. 1 255. New Y ork: Academic Press.
2. Jauch J . M. & Rohrlich F . 1955 Addison-W esley.
3. Generalized Perturbation Theory in Operator Form
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