Abstract
The relativistic quantum theory of interacting leptons (electrons or muons) and photons is referred to as quantum electrodynamics (QED). Applying the Feynman rules just developed, we first work our way through many of the lowest-order interactions of QED, pointing out when possible the elegant structure of Feynman graphs and their connection with CPT notions such as crossing. We then extend these techniques to electromagnetic form factors and decays of hadrons. Finally we return to the nonrelativistic concept of an electromagnetic force, i.e., static potential, and show how it can be extracted from relativistic Feynman graphs.
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© 1979 Springer Science+Business Media New York
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Scadron, M.D. (1979). Lowest-Order Electromagnetic Interactions. In: Advanced Quantum Theory and Its Applications Through Feynman Diagrams. Texts and Monographs in Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-11044-7_11
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DOI: https://doi.org/10.1007/978-3-662-11044-7_11
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-10970-9
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