Perturbation theory

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Perturbation theory by Wikipedia Bot 0 1970-01-01
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Perturbation theory by Ciro Santilli 34 Updated 2024-12-15 +Created 1970-01-01
Used a lot in quantum mechanics, where the equations are really hard to solve. There's even a dedicated wiki page for it: en.wikipedia.org/wiki/Perturbation_theory_(quantum_mechanics). Notably, Feynman diagrams are a way to represent perturbation calculations in quantum field theory.
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