Granular segregation as a critical phenomenon

Details Granular segregation as a critical phenomenon Granular segregation as a critical phenomenon

2002-07-16

arxiv.org/abs/cond-mat/0207399v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 5 figures, RevTex, Submitted to Phys.Rev.Lett

Scientific paper

10.1103/PhysRevLett.89.244301

We present the results of an experimental study of patterned segregation in a horizontally shaken shallow layer of a binary mixture of dry particles. An order parameter for the segregated structures is defined and the effect of the variation of the combined filling fraction, $C$, of the mixture on the observed pattern formation is systematically studied. The surprising result is that there is a critical event associated with the onset of the pattern, at $C=0.647\pm0.049$, which has the characteristics of a second order phase transition, including critical slowing down.

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