Conformal Theory for Yang-Lee Singularity of 2D 3-State Potts Model

We identify a conformal field theory (CFT) that describes the Yang-Lee edge singularity of the 2-dimensional (2D) 3-state Potts model. The identification is based on a comparison of finite-size scaling measurements to predictions for conformal minimal models. The comparison shows that the Yang-Lee edge singularities of the 2D 3-state Potts and the 2D Ising models are in the same universality class.