Critical coarsening without surface tension: The universality class of thevoter model - art. no. 045701

We show that the two-dimensional voter model, usually considered to be only a marginal coarsening system, represents a broad class of models for which phase ordering takes place without surface tension. We argue that voter-li ke growth is generically observed at order-disorder nonequilibrium transiti ons solely driven by interfacial noise between dynamically symmetric absorb ing states.