Complications when not using multipole expansion homepage › Forums › a nucleus with a general shape ? › Complications when not using multipole expansion This topic has 0 replies, 1 voice, and was last updated 2 years, 11 months ago by Andreas Debrabandere. Viewing 1 post (of 1 total) Author Posts March 2, 2020 at 11:09 pm #2765 Score: 0 Andreas DebrabandereParticipant The 1/(r_e-r_n) dependence of the hamiltonian is very complicated to integrate over if the shape of the object is irregular. The problem becomes easier if the shape is divided into multiple well-known shapes. 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