Theoretical Models of Self-Organized Criticality (SOC) Systems

Details Theoretical Models of Self-Organized Criticality (SOC) Systems Theoretical Models of Self-Organized Criticality (SOC) Systems

2012-04-23

arxiv.org/abs/1204.5119v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

42 pages, 15 figures: This manuscript is part of a planned e-book "Self-Organized Criticality Systems"

Scientific paper

In this chapter 2 of the e-book "Self-Organized Criticality Systems" we summarize the classical cellular automaton models, which consist of a statistical aspect that is universal to all SOC systems, and a physical aspect that depends on the physical definition of the observable. Then we derive some general analytical formulations of SOC processes, such as the exponential-growth SOC model and the fractal-diffusive SOC model, which also have universal validity for SOC processes, while specific applications to observations require additional physical scaling laws (e.g., for astrophysical or geophysical observations). Finally we discuss alternative SOC processes, SOC-related, or non-SOC processes, such as: self-organization (without criticality), forced SOC model, Brownian motion or classical diffusion, hyper-diffusion and Levy flight, nonextensive Tsallis entropy, turbulence, percolation, phase transitions, network systems, and chaotic systems. We synthesize a metrics that specifies which observational SOC properties are shared by these processes.

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