Home › Forums › density functional theory › the Born-Oppenheimer approximation › Born Oppenheimer approximation This topic has 0 replies, 1 voice, and was last updated 4 days, 12 hours ago by sharif.hasan. Viewing 1 post (of 1 total) Author Posts June 26, 2025 at 12:00 pm #12615 sharif.hasanParticipant 1. at high temp when nuclei motion is not negligible any more. 2. electron motion at the surfaces with high trappings/defects. 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