Episode 159: Quantum Electrodynamics Part 2
From The Science of Everything Podcast by James Fodor
April 1, 2026 · 45 min · Episode 162
About this episode
This episode explores the mathematical tools used in quantum electrodynamics, including a simple example calculation and the issue of divergent loop integrals.
Continuing from quantum electrodynamics part 1, here we explore the mathematical machinery used to compute interactions between particles, including propagators, Feynman diagrams, cross sections. We then walk through a simple example calculation to illustrate how these tools are applied. I conclude with an introduction to the problem of divergent loop integrals and how these can be resolved using renormalisation. Recommended pre-listening is Episode 158: Quantum Electrodynamics Part 1. If you enjoyed the podcast please consider supporting the show by making a PayPal donation or becoming a Patreon supporter. https://www.patreon.com/jamesfodor https://www.paypal.me/ScienceofEverything
People in this episode
Host: James Fodor
Topics covered
- quantum electrodynamics
- mathematical machinery
- particle interactions
- Feynman diagrams
- renormalisation
- loop integrals
Keywords
- quantum electrodynamics
- propagators
- Feynman diagrams
- cross sections
- renormalisation
- loop integrals
Mentioned in this episode
Books & works: Episode 158: Quantum Electrodynamics Part 1
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