Renormalization is perhaps one of the most controversial topics in high-energy physics. On the surface, it seems entirely ad-hoc and made up to subtract divergences which appear in particle physics calculations. However, when we dig a little deeper, we see that renormalization is nothing to be afraid of and that it is perfectly mathematically valid!
0:00 Intro
1:20 Source of Divergences
3:30 A Simple Analogy
8:20 Renormalization in Particle Physics
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