Temporal profiles of avalanches on networks

Nature Communications
James P Gleeson, Rick Durrett

Abstract

An avalanche or cascade occurs when one event causes one or more subsequent events, which in turn may cause further events in a chain reaction. Avalanching dynamics are studied in many disciplines, with a recent focus on average avalanche shapes, i.e., the temporal profiles of avalanches of fixed duration. At the critical point of the dynamics, the rescaled average avalanche shapes for different durations collapse onto a single universal curve. We apply Markov branching process theory to derive an equation governing the average avalanche shape for cascade dynamics on networks. Analysis of the equation at criticality demonstrates that nonsymmetric average avalanche shapes (as observed in some experiments) occur for certain combinations of dynamics and network topology. We give examples using numerical simulations of models for information spreading, neural dynamics, and behavior adoption and we propose simple experimental tests to quantify whether cascading systems are in the critical state.

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Citations

May 17, 2019·PloS One·Massimo StellaManlio De Domenico
Jul 11, 2018·Proceedings of the National Academy of Sciences of the United States of America·Mohammad Akbarpour, Matthew O Jackson
May 22, 2019·Physical Review. E·Dionysios Georgiadis, Didier Sornette
Sep 11, 2019·Physical Review. E·Ali FaqeehJames P Gleeson
May 20, 2020·Physical Review. E·Lilei HanShuguang Guan
Nov 28, 2019·Physical Review. E·Samuel UnicombMárton Karsai
Aug 15, 2020·Scientific Reports·Johannes PauschGunnar Pruessner
Jan 9, 2019·Frontiers in Neuroscience·Kartik K Iyer

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Software Mentioned

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Matlab

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