Dynamics-dependent criticality in models with q absorbing states
A. Lipowski, M. Droz
Abstract
We study a one-dimensional, nonequilibrium Potts-like model which has q symmetric absorbing states. For q=2, as expected, the model belongs to the parity conserving universality class. For q=3 the critical behaviour depends on the dynamics of the model. Under a certain dynamics it remains generically in the active phase, which is also the feature of some other models with three absorbing states. However, a modified dynamics induces a parity conserving phase transition. Relations with branching-annihilating random walk models are discussed in order to explain such a behaviour.
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