A Einstein's coefficients recoil effect

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What would happen with Einstein's coefficients if we wouldn't neglect the recoil effects?
 
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zb23 said:
What would happen with Einstein's coefficients if we wouldn't neglect the recoil effects?
Assuming that Einstein's coefficients are basically probabilities of absorption or emission of light by an atom or molecule, would recoil influence those probabilities?

Robert Hilborn, Einstein coefficients, cross sections, f values, dipole moments, and all that
https://arxiv.org/abs/physics/0202029
 

Thread 'Instantaneous dipole moment and orbitals'

Hi. I have got question as in title. How can idea of instantaneous dipole moment for atoms like, for example hydrogen be consistent with idea of orbitals? At my level of knowledge London dispersion forces are derived taking into account Bohr model of atom. But we know today that this model is not correct. If it would be correct I understand that at each time electron is at some point at radius at some angle and there is dipole moment at this time from nucleus to electron at orbit. But how...
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