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The analytic properties of scattering amplitudes in sixth-order perturbation theory

✍ Scribed by G. Wanders


Book ID
112838761
Publisher
Società Italiana di Fisica
Year
1960
Weight
544 KB
Volume
18
Category
Article
ISSN
0029-6341

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Assuming the Born-Oppenheimer approximation for molecular wavefunctions satisfies the Hellmann-Feynman theorem, Rayleigh-Schriidinger perturbation theory is employed to develop an analytic formula for derivatives of expectation values and second-order properties with respect to nuclear coordinates.