CFT Zoo

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yanglee [2026/03/05 14:58] (current)
Ludo Fraser-Taliente created
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 +The Yang-Lee edge singularity is a non-unitary CFT found by tuning the magnetic field in the Ising model to a critical imaginary value.
  
 +It has Ginzburg-Landau description as a scalar field with interaction $i g \phi^3$, and so is weakly coupled in $d=6-\epsilon$  [[https://arxiv.org/abs/2505.06369 | 1]]. 
 +
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 +===== External links =====
 +
 +  * [[https://en.wikipedia.org/wiki/Lee%E2%80%93Yang_theory|Wikipedia]]