Home › Forums › density functional theory › the Born-Oppenheimer approximation › Born-Oppenheimer approximation This topic has 0 replies, 1 voice, and was last updated 2 months ago by Eduardo. Viewing 1 post (of 1 total) Author Posts April 15, 2025 at 12:36 pm #12432 EduardoParticipant The Born-Oppenheimer approximation is not valid when there is strong coupling between nuclear and electronic motions. 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