Home › Forums › density functional theory › the Born-Oppenheimer approximation › Born-Oppenheimer Approximation Failure This topic is empty. Viewing 1 post (of 1 total) Author Posts October 4, 2025 at 12:53 pm #13395 NikolParticipant The Born-Oppenheimer Approximation cannot be applied when we have to consider the movement of the nuclei, in cases such as a very small weight of the nuclei or at very extreme temperatures. 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