American Journal of Physics
An exactly soluble one-dimensional, two-particle problem
H. A. Gersch
Abstract
We examine a one-dimensional problem involving two interacting particles in an external field for which the Schrödinger equation can be solved analytically for the ground state. The Hartree approximation for this system also has a simple analytic solution of the form previously derived by Foldy. Comparison of exact and Hartree solutions leads to precise estimates of the effect of correlations on the binding energy and on the two-particle probability distribution.