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Optimal disorder for segregation in annealed small worlds

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  • S. Gil
  • D. H. Zanette

Abstract

We study a model for microscopic segregation in a homogeneous system of particles moving on a one-dimensional lattice. Particles tend to separate from each other, and evolution ceases when at least one empty site is found between any two particles. Motion is a mixture of diffusion to nearest-neighbour sites and long-range jumps, known as annealed small-world propagation. The long-range jump probability plays the role of the small-world disorder. We show that there is an optimal value of this probability, for which the segregation process is fastest. Moreover, above a critical probability, the time needed to reach a fully segregated state diverges for asymptotically large systems. These special values of the long-range jump probability depend crucially on the particle density. Our system is a novel example of the rare dynamical processes with critical behaviour at a finite value of the small-world disorder. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005

Suggested Citation

  • S. Gil & D. H. Zanette, 2005. "Optimal disorder for segregation in annealed small worlds," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 47(2), pages 265-273, September.
    • Handle: RePEc:spr:eurphb:v:47:y:2005:i:2:p:265-273
    DOI: 10.1140/epjb/e2005-00319-8
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    Cited by:

    1. Robert Boyer & Denis Boyer & Gilles Laferté, 2007. "La connexion des réseaux comme facteur de changement institutionnel : l'exemple des vins de Bourgogne," PSE Working Papers halshs-00587708, HAL.
    2. Robert Boyer & Denis Boyer & Gilles Laferté, 2007. "La connexion des réseaux comme facteur de changement institutionnel : l'exemple des vins de Bourgogne," Working Papers halshs-00587708, HAL.

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