Quantum Exchange Algebra and Locality in Liouville Theory
  Exact operator solution for quantum Liouville theory is investigated based on the canonical free field. Locality, the field equation and the canonical commutation relations are examined based on the exchange algebra hidden in the theory. The exact solution proposed by Otto and Weigt is shown to be correct to all order in the cosmological constant. 
T. Fujiwara, H. Igarashi and Y. Takimoto (Ibaraki Univ.)