Coherent behavior of balls in a vibrated box

Details Coherent behavior of balls in a vibrated box Coherent behavior of balls in a vibrated box

2006-11-23

arxiv.org/abs/cond-mat/0611613v1

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

We report observations on very low density limit of one and two balls, vibrated in a box, showing a coherent behavior along a direction parallel to the vibration. This ball behavior causes a significant reduction of the phase space dimension of this billiard-like system. We believe this is because the lowest dissipation process along a non-ergodic orbit eliminates ball rotation and freezes transverse velocity fluctuations. From a two-ball experiment performed under low-gravity conditions, we introduce a "laser-like" ball system as a prototype of a new dynamical model for very low density granular matter at nonequilibrium steady state.

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