Self-organized criticality with a fishbone-like instability cycle

A.V. Milovanov

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Abstract

We study the phenomenon of self-organized criticality (SOC) as a transport problem for electric charges. A model for SOC based on the idea of a dynamic polarization response with random walks of the charge carriers gives critical exponents consistent with the results of numerical simulations of ordinary sand-pile models, and stability properties, associated with the scaling of the control parameter vs. distance to criticality. Overdriving of the system is shown to have a destabilizing effect on SOC. The instability is qualitatively similar to the internal kink mode in tokamaks with high-power beam injection and has serious implications for the functioning of complex systems.
Original languageEnglish
Article number60004
Pages (from-to)-
JournalEurophysics Letters
Volume89
Issue number6
DOIs
Publication statusPublished - 19 Apr 2010
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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