Abstract
We examine the formal foundations of quantum electrodynamics in the infinite-momentum frame. We interpret the infinite-momentum limit as the change of variables , , thus avoiding limiting procedures. Starting from the Feynman rules, we derive a -ordered perturbation expansion for the matrix. We then show how this expansion arises from a canonical formulation of the field theory in the infinite-momentum frame. We feel that this approach should lead to convenient approximation schemes for electrodynamics at high energy.
- Received 20 October 1969
DOI:https://doi.org/10.1103/PhysRevD.1.2901
©1970 American Physical Society