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Critical behavior of the two dimensional 2A->3A, 4A->0 binary system

Geza Odor
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Abstract

The phase transitions of the recently introduced 2A -> 3A, 4A -> 0 reaction-diffusion model (G.Odor, PRE 69 036112 (2004)) are explored in two dimensions. This model exhibits site occupation restriction and explicit diffusion of isolated particles. A reentrant phase diagram in the diffusion - creation rate space is confirmed in agreement with cluster mean-field and one-dimensional results. For strong diffusion a mean-field transition can be observed at zero branching rate characterized by $α=1/3$ density decay exponent. In contrast with this for weak diffusion the effective 2A ->3A->4A->0 reaction becomes relevant and the mean-field transition of the 2A -> 3A, 2A -> 0 model characterized by $α=1/2$ also appears for non-zero branching rates.

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Geza Odor. 2004-04-01. Critical behavior of the two dimensional 2A->3A, 4A->0 binary system. https://doi.org/10.1103/physreve.70.026119

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