Pseudospectral Methods Applied to the Electron Correlation Problem

The Hartree-Fock approximation is of central importance to quantum chemistry. The assumption of electrons interacting with each other through a mean field sim;>lifiesthe electronic structure problem considerably, and provides the starting point for almost all approaches. However,it is curious to note that even this simplifying assumption was not sufficient to make electronic structue calculations on polyatomic moleculesa viable proposition. The Hartrce-Fock equations are complicated integro-differentialequations, and the finite basis set approximation must be introduced to proceed