On central field models of the atom

A simple reduction of the potential energy assigned to a partial electron in the central field model of the atom removes the couplings of the single particle. Schroedinger equations describing electrons in atoms. It leads to the validity of the same virial theorem for a particular electron as is valid for the whole atom. The model makes a useful separation of the single particle potential energy operator into local and nonlocal parts. The method is based on the fact that the parameters appearing in the potential energy operators are rather insensitive to the detailed radial shape of wave functions. (author)