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

Autor:	Dinis, L., Martin, P., Barral, J., Prost, J., Joanny, J. F.
Rok vydání:	2014
Předmět:	Condensed Matter - Statistical Mechanics
Zdroj:	Physical Review Letters 109, 160602 (2012)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.109.160602
Popis:	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. Comment: 5 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1409.6483 Zobrazit plný text záznamu View this record from Arxiv