Boundary-induced nonequilibrium phase transition into an absorbing state.
We demonstrate that absorbing phase transitions in one dimension may be induced by the dynamics of a single site. As an example, we consider a one-dimensional model of diffusing particles, where a single site at the boundary evolves according to the dynamics of a contact process. As the rate for offspring production at this site is varied, the model exhibits a phase transition from a fluctuating active phase into an absorbing state. The universal properties of the transition are analyzed by numerical simulations and approximation techniques.
Universität Würzburg, Fakultät für Physik und Astronomie, 97074 Würzburg, Germany.
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Barato
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Hinrichsen