Toward a quantum field theoretical description of oscillation effects

Abstract

In this paper, we propose an approach based on the theory of an axiomatic $S$ matrix and partially switching on an interaction, which is extremely suitable for describing the phenomenon of oscillations within the framework of quantum field theory. We discuss the relation of the proposed approach with other approaches based on considering of wave packets as asymptotic states or introducing of ``distance- or time-dependent propagators''.

Minor corrections. References added