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arXiv · 1409.6483

Fluctuation-response theorem for the active noisy oscillator of the hair-cell bundle

L. Dinis·P. Martin·J. Barral·J. Prost·J. F. Joanny
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Abstract

The hair bundle of sensory cells in the vertebrate ear provides an example of a noisy oscillator close to a Hopf bifurcation. The analysis of the data from both spontaneous and forced oscillations shows a strong violation of the fluctuation-dissipation theorem, revealing the presence of an underlying active process that keeps the system out of equilibrium. Nevertheless, we show that a generalized fluctuation-dissipation theorem, valid for non-equilibrium steady states, is fulfilled within the limits of our experimental accuracy and computational approximations, when the adequate conjugate degrees of freedom are chosen.

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L. Dinis, P. Martin, J. Barral, J. Prost, J. F. Joanny. 2014-09-23. Fluctuation-response theorem for the active noisy oscillator of the hair-cell bundle. https://doi.org/10.1103/physrevlett.109.160602

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