By a proper approximation of the interaction term in the Hartree energy expression a simple differential equation can be derived for the one-electron orbitals of a many-electron system. The total wave function and energy of the system are constructed from the successive eigenfunctions and eigenvalues of this equation which involves of the number of electrons as a parameter only. The method shows common features with others (Hartree-Fock without exchange, theory of geminals). The difficulties of the numerical calculations arising with other methods can be vastly reduced and, in spite of the great simplicity for He, Li and Be, promising accuracy is reached.
ASJC Scopus subject areas
- Nuclear and High Energy Physics