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A local barycentric version of the Bak-Sneppen model

2019/06/14 by Kennerberg, Philip, Volkov, Stanislav
#60J05 #60K35 #91D10 #FOS: Mathematics #Probability (math.PR)

paper · doi:10.48550/arxiv.1906.06098

Abstract

We study the behaviour of the interacting particle system, arising from the Bak-Sneppen model and Jante's law process. Let N vertices be placed on a circle, such that each vertex has exactly two neighbours. To each vertex assign a real number, called \em fitness. Now find the vertex which fitness deviates most from the average of the fitnesses of its two immediate neighbours (in case of a tie, draw uniformly among such vertices), and replace it by a random value drawn independently according to some distribution ζ. We show that in case where ζ is a uniform or a discrete uniform distribution, all the fitnesses except one converge to the same value.

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