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BO - Ansatz

BO - Ansatz. nuclei. electrons. Nuclear positions are parameters , not variables. Electronic Schrödinger equation:. e.g. H 2 +. Nuclear Schrödinger equation:. Rigid rotor. Harmonic oscillator. Better approximations:.

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BO - Ansatz

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  1. BO - Ansatz nuclei electrons Nuclear positions are parameters, not variables.

  2. Electronic Schrödinger equation: e.g. H2+

  3. Nuclear Schrödinger equation:

  4. Rigid rotor Harmonic oscillator

  5. Better approximations:

  6. In the absence of spin-orbit coupling, the projection L of electronic angular momentum L on molecular axis is conserved. L (+/-) Term symbol: 2S+1L(g/u) L

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