Variationally consistent approximation scheme for charge transfer
- 1 November 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 18 (5) , 2058-2062
- https://doi.org/10.1103/physreva.18.2058
Abstract
The author has developed a technique for testing various charge-transfer approximation schemes for consistency with the requirements of the Kohn variational principle for the amplitude to guarantee that the amplitude is correct to second order in the scattering wave functions. Applied to Born-type approximations for charge transfer it allows the selection of particular groupings of first-, second-, and higher-Born-type terms that obey the consistency requirement, and hence yield more reliable approximations to the amplitude.Keywords
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