Affordable Access

Access to the full text

Double Entropic Stochastic Resonance

Authors
  • Burada, P. S.
  • Schmid, G.
  • Reguera, D.
  • Rubi, J. M.
  • Hänggi, P.
Type
Published Article
Publication Date
Aug 24, 2009
Submission Date
Aug 24, 2009
Identifiers
DOI: 10.1209/0295-5075/87/50003
Source
arXiv
License
Yellow
External links

Abstract

We demonstrate the appearance of a purely entropic stochastic resonance (ESR) occurring in a geometrically confined system, where the irregular boundaries cause entropic barriers. The interplay between a periodic input signal, a constant bias and intrinsic thermal noise leads to a resonant ESR-phenomenon in which feeble signals become amplified. This new phenomenon is characterized by the presence of two peaks in the spectral amplification at corresponding optimal values of the noise strength. The main peak is associated with the manifest stochastic resonance synchronization mechanism involving the inter-well noise-activated dynamics while a second peak relates to a regime of optimal sensitivity for intra-well dynamics. The nature of ESR, occurring when the origin of the barrier is entropic rather than energetic, offers new perspectives for novel investigations and potential applications. ESR by itself presents yet another case where one constructively can harvest noise in driven nonequilibrium systems.

Report this publication

Statistics

Seen <100 times