For example, if I attempt to do an a priori computation of the quantum structure of, say, a carbon atom, I might begin by solving a single
electron model, treating the
electron -
electron interaction using the probability
distribution from the single
electron model to generate a spherically symmetric «
density» of
electrons around the nucleus, and then performing a self - consistent field theory iteration (resolving the single
electron model for the new potential) until it converges.