Abstract
In the framework of a discrete nonlinear Schrödinger equation with long-range dispersion, we propose a general mechanism for obtaining a controlled switching between bistable localized excitations. We show that the application of a spatially symmetric kick leads to the excitation of an internal breathing mode and that switching between narrow, pinned states and broad, mobile states with only small radiative losses occurs when the kick strength exceeds a threshold value. This mechanism could be important for controlling energy storage and transport in molecular systems.
- Received 26 September 1997
DOI:https://doi.org/10.1103/PhysRevE.57.4739
©1998 American Physical Society