Revisiting the nonequilibrium phase transition of the triplet-creation model

Statistical and Nonlinear Physics

Abstract.

The nonequilibrium phase transition in the triplet-creation model is investigated using critical spreading and the conservative diffusive contact process. The results support the claim that at high enough diffusion the phase transition becomes discontinuous. As the diffusion probability increases the critical exponents change continuously from the ordinary directed percolation (DP) class to the compact directed percolation (CDP). The fractal dimension of the critical cluster, however, switches abruptly between those two universality classes. Strong crossover effects in both methods make it difficult, if not impossible, to establish the exact location of the tricritical point.

PACS.

05.70.Ln Nonequilibrium and irreversible thermodynamics 87.10.+e General theory and mathematical aspects 89.75.Fb Structures and organization in complex systems 

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Authors and Affiliations

  1. 1.Instituto de Física de São Carlos, Universidade de São PauloSão CarlosBrazil

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