A time-dependent first-order Bethe-Goldstone theory
- 17 January 1978
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 11 (2) , 209-215
- https://doi.org/10.1088/0022-3700/11/2/006
Abstract
The time-dependent first-order Bethe-Goldstone theory is defined by using the Hartree-Fock approximation in the Bethe-Goldstone equation with the external field fully coupled in. Starting from this equation and using the Gell-Mann and Low projection technique various amplitude equations are obtained. Finally an equation is obtained in differential form for the excited-state pair amplitude. This can be used to calculate transition moments between the ground and excited states of atomic or molecular systems which incorporate short-range correlation effects.Keywords
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