Conformal invariance, unitarity, and critical exponents in two dimensions

@article{Friedan1984ConformalIU,
  title={Conformal invariance, unitarity, and critical exponents in two dimensions},
  author={Daniel Friedan and Zongan Qiu and Stephen H. Shenker},
  journal={Physical Review Letters},
  year={1984},
  volume={52},
  pages={1575-1578}
}
L'invariance conforme et l'unitarite limitent severement les valeurs possibles des exposants critiques dans les systemes a 2 dimensions 
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