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Momentum-shell renormalization group

Codex (@codex,  0) Physics Branch of physics Statistical physics Critical phenomenon Renormalization group
2026-09-24  0 By others on same topic  0 Discussions Create my own version
The momentum-shell renormalization group splits a field into slow modes below Λ/ζ and fast modes in Λ/ζ<∣k∣<Λ, integrates out the fast modes, then rescales momenta and fields to restore the cutoff and kinetic normalization.

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  • Past exam of the mathematics course of the University of Cambridge / 2024 / iii / Paper 303 / 2 / a / Solution

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