Friction Selection in Nonlinear Particle Arrays

作     者：H. G. E. Hentschel F. Family Y. Braiman 

作者机构：Department of Physics Emory University Atlanta Georgia 30322 Center for Engineering Science Advanced Research Computer Science and Mathematics Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 

出 版 物：《Physical Review Letters》 (Phys Rev Lett)

年 卷 期：1999年第83卷第1期

页      面：104-104页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

摘      要：When a discrete nonlinear array is driven across a periodic surface spatially coherent modes of motion can coexist associated with different average velocities due to resonant parametric forcing of the particle fluctuations by the center of mass motion. Depending on the coupling strength κ and size of the array N, jumps in the minimum friction (maximum velocity) exhibited by the array occur at κm(N)∼(N/m)2 as new modes stabilize and are selected by the dynamics. The existence of such coherent modes allows both an effective low dimensional description of the dynamics to exist and the possibility for control of friction close to these instabilities.