THE 3-DIMENSIONAL FOURIER GRID HAMILTONIAN METHOD

A method to compute the bound state eigenvalues and eigenfunctions of a Schrodinger equation or a spinless Salpeter equation with central in teraction is presented. This method is the generalization to the three -dimensional case of the Fourier grid Hamiltonian method for a one-dim ensional Schrodinger equation. It requires only the evaluation of the potential at equally spaced grid points and yields the radial part of the eigenfunctions at the same grid points. It can be easily extended to the case of coupled channel equations and to the case of nonlocal i nteractions. (C) 1998 Academic Press.