The Spin Glass Phase in the Four-State, Three-Dimensional Potts Model
  We perform numerical simulations, including parallel tempering, on the Potts glass model with binary random quenched couplings using the JANUS application-oriented computer. We find and characterize a glassy transition, estimating the location of the transition and the value of the critical exponents. We show that there is no ferromagnetic transition in a large temperature range around the glassy critical temperature. We also compare our results with those obtained recently on the "random permutation" Potts glass. 
A. Cruz, L.A. Fernandez, A. Gordillo-Guerrero, M. Guidetti, A.   Maiorano, F. Mantovani, E. Marinari, V. Martin-Mayor, A. Mu...