Home › Forums › density functional theory › the Born-Oppenheimer approximation › BO approximation This topic has 0 replies, 1 voice, and was last updated 3 months, 1 week ago by chuannan. Viewing 1 post (of 1 total) Author Posts September 9, 2024 at 3:52 am #11121 chuannanParticipant In my opinion, when the temperature of environment is very high, the BO approximation can be not valid, since the nuclei has a high kinetic energy, and they move rapidly not slowly. 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