AN IMPROVED MANY-PARTICLE CONFIGURATION TRUNCATION

It is wel lknown that, in any practical microscopic calculations in nuclear theory certain kind of truncation has to be made because of the large dimensionality of the problem. Usually, in various microscopic calculations (e. g. the shell-model calculations, the Bardeen-Cooper-Schrieffer(BCS) or the Hartree-Fock-Bogoliubov(HFB) calculations), a single particle level (SPL) truncation is adopted. An alternative approach is the many-particle