Critical properties of the 2D Z(5) vector model
  The two-dimensional Z(5) vector model is investigated through the determination of critical points and one critical index. To this purpose a new cluster algorithm has been developed valid for 2D Z(N) models with odd values of N. Results are compared with analytical predictions. 
Oleg Borisenko, Gennaro Cortese, Roberto Fiore, Mario Gravina and   Alessandro Papa
hep-lat