Brownian forces in sheared granular matter

Details Brownian forces in sheared granular matter Brownian forces in sheared granular matter

2005-07-22

arxiv.org/abs/cond-mat/0507533v2

Physics

Condensed Matter

Statistical Mechanics

4 pages, 5 figures and 1 table

Scientific paper

10.1103/PhysRevLett.96.118002

We present results from a series of experiments on a granular medium sheared in a Couette geometry and show that their statistical properties can be computed in a quantitative way from the assumption that the resultant from the set of forces acting in the system performs a Brownian motion. The same assumption has been utilised, with success, to describe other phenomena, such as the Barkhausen effect in ferromagnets, and so the scheme suggests itself as a more general description of a wider class of driven instabilities.

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