Interaction of intrinsic localized modes with structures in anharmonic lattice systems

Abstract

The dynamics of intrinsic localized modes (ILMs) in the system with periodic structures are investigated. In homogeneous lattice systems ILMs interact randomly and concentrate to a single large localization. We show that this energy concentration is suppressed by introducing periodic structures in the system. The dynamics of ILMs in the structures can be classified by comparing the size of structures with the characteristic size of the ILMs. These facts can be explained by introducing mean free time of ILMs against collisions of other ILMs or structures.