Phase separation of the Potts model in que square lattice
  When the two dimensional q-color Potts model in the square lattice is quenched at zero temperature with Glauber dynamics, the energy decreases in time following an Allen-Cahn power law, and the system converges to a phase with energy higher than the ground state energy after an arbitrary large time when q>4. At low but finite temperature, it cesses to obey the power-law regime and orders after a very long time, which increases with q, and before which it performs a domain growth process which tends to be slower as q increases. We briefly present and comment numerical results on the ordering at nonzero temperature. 
Miguel Ibanez de Berganza, Ezequiel E. Ferrero, Sergio A. Cannas,   Vittorio Loreto and Albert Petri