NEW STANDPOINT ON THE CORRELATION PROBLEM

V.A. Sidorovich

Skobeltsyn Institute of Nuclear Physics, Moscow State University

The operator approach to the solution of the non-relativistic time-
independent Schr\"odinger equation for many-body quantum system (V.A. 
Sidorovich, Physica Scripta, in press) is used for investigation of 
electron correlation in a few-electron atom. It is established that 
the electron-electron interaction inside an isolated configuration 
does not destroy the independent particle model and only the 
interconfiguration interaction potential in a few-electron atom may 
be considered as a proper correlation potential.