Abstract
The diffusion properties of overdamped particles moving in spatially symmetrical periodic potentials subject to both symmetrical time-periodic driving and stochastic forcing are investigated [the typical model formally reads , , , , ]. It is found that the diffusion rate can be greatly enhanced if the various forcings are chosen in an optimal matching. In particular, we may get a diffusion rate larger than the rate of free diffusion.
- Received 26 January 1996
DOI:https://doi.org/10.1103/PhysRevLett.76.4874
©1996 American Physical Society