Volume 79, Number 1, July 2007
|Number of page(s)||6|
|Published online||15 June 2007|
Brownian motion: Anomalous response due to noisy chaos
Universität Bielefeld, Fakultät für Physik - 33615 Bielefeld, Germany
Accepted: 24 May 2007
We predict three different, quite unusual transport properties of an underdamped Brownian particle in the form of current and force of opposite signs. Their origin is a subtle interplay between the stability of coexisting attractors, noise-induced metastability, and transient chaos. Numerical simulations are complemented by intuitive explanations of the basic mechanism and analytical approximations.
PACS: 05.45.-a – Nonlinear dynamics and chaos / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 05.60.-k – Transport processes
© Europhysics Letters Association, 2007
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