Exactly renormalizable model in quantum field theory. II. The physical-particle representation

Abstract

For the simplified model of quantum field theory discussed in a previous paper it is shown how the physical particles can be properly described by means of the so-called asymptotically stationary (a.s.) states. It is possible by formulating the theory in terms of these a.s. states to express it entirely in terms of renormalized quantities and convergent integrals.