Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2010-01-11
Soft Matter, 2010, 6, 3059 - 3064
Physics
Condensed Matter
Soft Condensed Matter
7 pages, 6 figures
Scientific paper
10.1039/c000802h
By analyzing the displacement statistics of an assembly of horizontally vibrated bidisperse frictional grains in the vicinity of the jamming transition experimentally studied before, we establish that their superdiffusive motion is a genuine Levy flight, but with `jump' size very small compared to the diameter of the grains. The vibration induces a broad distribution of jumps that are random in time, but correlated in space, and that can be interpreted as micro-crack events at all scales. As the volume fraction departs from the critical jamming density, this distribution is truncated at a smaller and smaller jump size, inducing a crossover towards standard diffusive motion at long times. This interpretation contrasts with the idea of temporally persistent, spatially correlated currents and raises new issues regarding the analysis of the dynamics in terms of vibrational modes.
Biroli Giulio
Bouchaud Jean-Philippe
Candelier Raphaël
Dauchot Olivier
Lechenault Frederic
No associations
LandOfFree
Super-diffusion around the rigidity transition: Levy and the Lilliputians does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Super-diffusion around the rigidity transition: Levy and the Lilliputians, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Super-diffusion around the rigidity transition: Levy and the Lilliputians will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-458691