if Born-Oppenheimer approximation is not valid - compmatphys

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October 11, 2022 at 6:10 pm #7127

biao
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we will overestimate the H

October 11, 2022 at 6:14 pm #7128

biao
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The Born-Oppenheimer approximation is only valid if the electron state is sufficiently separated from the other electron states. The Born-Oppenheimer approximation fails when the electronic states cross or approach.
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