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Aging in a Model of Self-Organized Criticality

Stefan Boettcher·Maya Paczuski
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Abstract

Temporal autocorrelation functions for avalanches in the Bak-Sneppen model display aging behavior similar to glassy systems. Numerical simulations show that they decay as power laws with two distinct regimes separated by a time scale which is the waiting time, or age, of the avalanche. Thus, time-translational invariance is dynamically broken. The critical exponent of the initial decay is that of the familiar stationary dynamics while a new critical exponent for the late-time behavior appears. This new exponent characterizes a non-stationary regime that has not been previously considered in the context of self-organized criticality.

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Stefan Boettcher, Maya Paczuski. 1997-06-07. Aging in a Model of Self-Organized Criticality. https://doi.org/10.1103/physrevlett.79.889

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