Geometric Stochastic Resonance
Pulak Kumar Ghosh, Fabio Marchesoni, Sergey E. Savel'ev, Franco, Nori
TL;DR
This paper demonstrates that stochastic resonance can occur purely due to geometric effects in a system with a Brownian particle crossing a porous membrane, without energetic barriers, highlighting the importance of cavity and pore geometry.
Contribution
It reveals a novel geometric form of stochastic resonance that does not rely on energetic or entropic barriers, emphasizing the role of system geometry.
Findings
Stochastic resonance occurs without energetic barriers.
Resonance properties depend on cavity and pore geometry.
Optimal synchronization conditions are geometry-dependent.
Abstract
A Brownian particle moving across a porous membrane subject to an oscillating force exhibits stochastic resonance with properties which strongly depend on the geometry of the confining cavities on the two sides of the membrane. Such a manifestation of stochastic resonance requires neither energetic nor entropic barriers, and can thus be regarded as a purely geometric effect. The magnitude of this effect is sensitive to the geometry of both the cavities and the pores, thus leading to distinctive optimal synchronization conditions.
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