Home › Forums › density functional theory › the Born-Oppenheimer approximation › Failures of BO Approx This topic has 0 replies, 1 voice, and was last updated 2 years, 2 months ago by jmontgomery@flsouthern.edu. Viewing 1 post (of 1 total) Author Posts October 9, 2022 at 1:00 am #7012 jmontgomery@flsouthern.eduParticipant The BO approx. assumes nuclei are not moving. At low energies this is a good approximation. However at higher energies where motion of the nuclei, ex high vibrational states, the BO approx. should be less accurate. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In