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Persistent dynamic correlations in self-organized critical systems away from their critical point

Author

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  • Woodard, Ryan
  • Newman, David E.
  • Sánchez, Raúl
  • Carreras, Benjamin A.

Abstract

We show that correlated dynamics and long time memory persist in self-organized criticality (SOC) systems even when forced away from the defined critical point that exists at vanishing drive strength. These temporal correlations are found for all levels of external forcing as long as the system is not overdriven. They arise from the same physical mechanism that produces the temporal correlations found at the vanishing drive limit, namely the memory of past events stored in the system profile. The existence of these correlations contradicts the notion that a SOC time series is simply a random superposition of events with sizes distributed as a power law, as has been suggested by previous studies.

Suggested Citation

  • Woodard, Ryan & Newman, David E. & Sánchez, Raúl & Carreras, Benjamin A., 2007. "Persistent dynamic correlations in self-organized critical systems away from their critical point," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 373(C), pages 215-230.
    • Handle: RePEc:eee:phsmap:v:373:y:2007:i:c:p:215-230
    DOI: 10.1016/j.physa.2006.05.001
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    Cited by:

    1. Pavlos, G.P. & Karakatsanis, L.P. & Xenakis, M.N. & Sarafopoulos, D. & Pavlos, E.G., 2012. "Tsallis statistics and magnetospheric self-organization," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 391(11), pages 3069-3080.

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