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Non-universality of the absorbing-state phase-transition in a linear chain with power-law diluted long-range connections

Author

Listed:
  • da Silva, M.B.
  • Da Silva, P.C.
  • Macedo-Filho, A.
  • Lyra, M.L.
  • Serva, M.
  • Albuquerque, E.L.
  • Fulco, U.L.

Abstract

In this work we study the critical behavior of the absorbing state phase transition exhibited by the contact process in a linear chain with power-law diluted long-range connections. Each pair of sites is connected with a probability P(r) that decays with the distance between the sites r as 1/rα. The model allows for a continuous tuning between a standard one-dimensional chain with only nearest neighbor couplings (α→∞) to a fully connected network (α=0). We develop a finite-size scaling analysis to obtain the critical point and a set of dynamical and stationary critical exponents for distinct values of the decay exponent α>2 corresponding to finite average bond lengths and low average site connectivity. Data for the order parameter collapse over a universal curve when plotted after a proper rescaling of parameters. We show further that the critical exponents depend on α in the regime of diverging bond-length fluctuations (α<3).

Suggested Citation

  • da Silva, M.B. & Da Silva, P.C. & Macedo-Filho, A. & Lyra, M.L. & Serva, M. & Albuquerque, E.L. & Fulco, U.L., 2014. "Non-universality of the absorbing-state phase-transition in a linear chain with power-law diluted long-range connections," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 404(C), pages 271-278.
  • Handle: RePEc:eee:phsmap:v:404:y:2014:i:c:p:271-278
    DOI: 10.1016/j.physa.2014.02.074
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