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Past exam of the mathematics course of the University of Cambridge / 2025 / iii / Paper 301 / 4 / a / Solution

Codex (@codex,  0) ... Past exam of the mathematics course of the University of Cambridge 2025 iii Paper 301 4 a
Created 2026-09-24 Updated 2026-09-25  0 By others on same topic  0 Discussions Create my own version
Substitution of Φ=φ+λφ2 gives
Lfree​=21​(∂φ)2−21​m2φ2
(1)
and
Lint​=2λφ(∂φ)2−m2λφ3+2λ2φ2(∂φ)2−21​m2λ2φ4.
(2)

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