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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
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An operator is irrelevant at
a
fixed point
when its
coupling
has negative
renormalization-group
eigenvalue
. Its dimensionless
coupling
decreases under coarse-graining.
Ancestors
(7)
Renormalization-group relevance
Renormalization group
Critical phenomenon
Statistical physics
Branch of physics
Physics
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(2)
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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