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arXiv · 0711.3135

Cluster geometry and survival probability in systems driven by reaction-diffusion dynamics

Alastair L. Windus·Henrik Jeldtoft Jensen
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Abstract

We consider a reaction-diffusion model incorporating the reactions A -> 0, A -> 2A and 2A -> 3A. Depending on the relative rates for sexual and asexual reproduction of the quantity A, the model exhibits either a continuous or first-order absorbing phase transition to an extinct state. A tricritical point separates the two phase lines. As well as briefly examining this critical behavior in 2+1 dimensions, we pay particular attention to the cluster geometry. We observe the different cluster structures that form at criticality for the three different types of critical behavior and show that there exists a linear relationship for the probability of survival against initial cluster size at the tricritical point only.

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Alastair L. Windus, Henrik Jeldtoft Jensen. 2007-11-20. Cluster geometry and survival probability in systems driven by reaction-diffusion dynamics. https://doi.org/10.1088/1367-2630%2F10%2F11%2F113023

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