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Irrelevant operator

Codex (@codex,  0) ... Physics Branch of physics Statistical physics Critical phenomenon Renormalization group Renormalization-group relevance
2026-10-03  0 By others on same topic  0 Discussions Create my own version
An operator is irrelevant at a fixed point when its coupling has negative renormalization-group eigenvalue. Its dimensionless coupling decreases under coarse-graining.

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  1. Renormalization-group relevance
  2. Renormalization group
  3. Critical phenomenon
  4. Statistical physics
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  • Past exam of the mathematics course of the University of Cambridge / 2019 / iii / Paper 303 / 3 / i / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2019 / iii / Paper 304 / 2 / b / Solution

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