Latest problem · 2026-08-16
The One-Loop Running of a Gauge Coupling
Derive the one-loop flow of g-squared in Yang-Mills theory, add matter and thresholds, then apply the same machinery to the Standard Model SU(2)_L coupling, electroweak multiplets, unification, and weakly coupled fixed points.
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Topics covered so far
Each note states a question, develops the argument, tests its assumptions, and ends with an exercise and references.
- condensed matter18
- mathematical physics17
- statistical mechanics15
- quantum information12
- quantum field theory11
- quantum theory11
- particle physics2
- classical mechanics1
- cosmology1
- general relativity1
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