Problems in Many-Body Effective Interaction Theory for Nuclei and How They Differ from Those for Atoms

摘要: The many-body perturbation theory for open-shell systems is briefly discussed, particularly with regard to the derivation of diagrammatic expansion effective interaction. We then compare application this atoms and nuclei observe that calculations are more difficult nuclei. Most problems in nuclear arise from complicated nature nucleon-nucleon (or strong) In particular interaction tends diverge due highly collective states which lie low energy, because strength Other methods calculating besides also discussed. At present time exp (S) or coupled-cluster method appears be best most accurate computing spectra.