Abstract
Old fashioned (time-ordered) perturbation theory evaluated in the infinite momentum frame is shown to provide a viable calculational alternative to the usual Feynman procedure for quantum electrodynamics. The renormalization procedure can be implemented in a straightforward manner. We also introduce a convenient method for automatically including Z-graph (backward-moving fermion) contributions. We have calculated the electron anomalous moment through fourth order in perturbation theory in agreement with the Sommerfield-Petermann results, and have calculated representative contributions to the sixth order moment. Our results agree with those of Levine and Wright. The validity of the infinite momentum method as a renormalizable calculational procedure in quantum electrodynamics gives field-theoretic parton calculations for composite particles a rigorous basis, provided that a covariant regularization procedure is used. These new techniques also show how to renormalize field theory quantized on the light cone and how to implement the Feynman gauge.
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