Abstract
The identity recently derived by Hiller, Sucher, and Feinberg between a -function expectation value and the expectation value of a smoothly varying operator is generalized. A discussion of the relative accuracy of the two expressions for approximate wave functions follows.
- Received 21 May 1979
DOI:https://doi.org/10.1103/PhysRevA.21.1067
©1980 American Physical Society