Direct expectation value calculations
- 1 February 1985
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 18 (2) , 245-252
- https://doi.org/10.1088/0305-4470/18/2/014
Abstract
A new application of the Hellmann-Feynman theorem is shown to allow accurate calculation of expectation values along with energies for the Schrodinger equation, for variable boundary position and boundary conditions. Power series and finite difference versions of the method are developed and applied to perturbed oscillator and perturbed hydrogen atom problems.Keywords
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