Quantum Electrodynamics in the Infinite-Momentum Frame
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 τ=2-11(t+z), Z=2-11(t-z), thus avoiding limiting procedures. Starting from the Feynman rules, we derive a τ-ordered perturbation expansion for the S 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.
- Publication:
-
Physical Review D
- Pub Date:
- May 1970
- DOI:
- 10.1103/PhysRevD.1.2901
- Bibcode:
- 1970PhRvD...1.2901K