Abstract
The "mean frequency" technique, a simple procedure introduced by Bebb and Gold for the approximate evaluation of sums occurring in high-order perturbation theory, represents a useful approximation method. Its predictions compare favorably to exact results obtained by Gontier and Trahin for multiphoton bound-bound transitions in hydrogen. However, the technique can be in error if the "mean frequency" lies near certain integers.
- Received 5 January 1976
DOI:https://doi.org/10.1103/PhysRevA.13.1801
©1976 American Physical Society
