Two- and Three-Particle Coulomb Systems

Abstract

The Coulomb T matrix is examined in a two‐body and a three‐body Hilbert space. The purpose is to demonstrate how this function may be used to construct the Faddeev three‐body kernel. In the process the apparent paradox of the indefiniteness of the Coulomb T matrix on the energy shell is resolved. The question of off‐shell unitarity is discussed.