Home › Forums › density functional theory › the Born-Oppenheimer approximation › When BO approximation becomes invalid? This topic has 0 replies, 1 voice, and was last updated 1 year, 2 months ago by jiehuang.fi@gmail.com. Viewing 1 post (of 1 total) Author Posts October 6, 2023 at 8:54 am #9343 jiehuang.fi@gmail.comParticipant The fact that the mass of nuclei is much larger than electrons is valid all the time. BO approximation fails when there are other forces applied to the nuclei or nuclei become protons and neutrons. 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
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