Home › Forums › density functional theory › the Born-Oppenheimer approximation › Born-Oppenheimer approximation This topic has 0 replies, 1 voice, and was last updated 1 week, 3 days ago by Simon Van Looveren. Viewing 1 post (of 1 total) Author Posts October 2, 2025 at 2:29 pm #13359 Simon Van LooverenParticipant The Born-Oppenheimer approximation does not work when the nuclei don’t move a lot slower than the electrons. This could be true at very high temperature/in a system that is not a solid. 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