Home › Forums › density functional theory › the Born-Oppenheimer approximation › BO approximation This topic has 0 replies, 1 voice, and was last updated 2 years, 3 months ago by anikeya. Viewing 1 post (of 1 total) Author Posts December 13, 2022 at 5:06 am #8179 anikeyaParticipant BO approximation would fail when the v_n is not very small when compared to v_electron. 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