Home › Forums › density functional theory › the Born-Oppenheimer approximation › BO approximation This topic has 0 replies, 1 voice, and was last updated 2 years, 1 month ago by ajmalrup. Viewing 1 post (of 1 total) Author Posts October 23, 2022 at 12:04 am #7384 ajmalrupParticipant In cases like nuclear fission or fusion where nucleus cannot be considered as static. 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