Splitting the voter Potts model critical point
M. Droz1 , A. L. Ferreira2 , A. Lipowski3
1 Department of Physics, University of Geneva, CH 1211 Geneva 4, Switzerland
2 Departamento de Fisica, Universidade de Aveiro, 3810-193 Aveiro, Portugal
3 Department of Physics, A. Mickiewicz University, 61-614 Pozna´n, Poland
Phys. Rev. E, 67, 056108-1 – 056108-4 (2003)
Recently some two-dimensional models with double symmetric absorbing states were shown to share the same critical behavior that was called the voter universality class. We show that, for an absorbing-states Potts model with finite but further than nearest-neighbor range of interactions, the critical point is split into two critical points: one of the Ising type and the other of the directed percolation universality class. Similar splitting takes place in the three-dimensional nearest-neighbor model.