Sudden Collapse of a Granular Cluster

Details Sudden Collapse of a Granular Cluster Sudden Collapse of a Granular Cluster

2002-04-12

arxiv.org/abs/cond-mat/0204275v1

Phys. Rev. Lett. 88, 174302 (2002)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 figures. Figure quality has been reduced in order to decrease file-size

Scientific paper

10.1103/PhysRevLett.88.174302

Single clusters in a vibro-fluidized granular gas in N connected compartments become unstable at strong shaking. They are experimentally shown to collapse very abruptly. The observed cluster lifetime (as a function of the driving intensity) is analytically calculated within a flux model, making use of the self-similarity of the process. After collapse, the cluster diffuses out into the uniform distribution in a self-similar way, with an anomalous diffusion exponent 1/3.

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