Complications for the perturbation theory without having done a multipole expans homepage › Forums › a nucleus with a general shape ? › Complications for the perturbation theory without having done a multipole expans This topic has 0 replies, 1 voice, and was last updated 3 years, 1 month ago by Franziska1. Viewing 1 post (of 1 total) Author Posts February 23, 2020 at 4:55 pm #2646 Score: 0 Franziska1Participant The nuclear-electron interaction is computationally very complicated and for a nucleus in a complicated shape not solvable anymore. Therefore a multipole expansion helps. 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