Exchange forces in dispersion relations investigated using circuit relations.
We propose a novel method to compute in an exact manner the left-hand cut discontinuity of the electron-atom partial wave scattering amplitude in the complex energy plane within the static exchange approximation. Zero energy dispersion relations for electron-hydrogen scattering are computed numerically for illustration.
Vrinceanu
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Center for Theoretical Studies of Physical Systems, Clark Atlanta University, Atlanta, Georgia 30314, USA.
Msezane
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AZ
Bessis
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D
Temkin
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A