Fluctuations, linear response and heat flux of an aging system

Abstract : We measure the fluctuations of the position of a Brownian particle confined by an optical trap in an aging gelatin droplet after a fast quench. Its linear response to an external perturbation is also measured. We compute the spontaneous heat flux from the particle to the bath due to the nonequilibrium formation of the gel. We show that the mean heat flux is quantitatively related to the violation of the equilibrium fluctuation-dissipation theorem as a measure of the broken detailed balance during the aging process.
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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00653786
Contributor : Sergio Ciliberto <>
Submitted on : Tuesday, December 20, 2011 - 11:35:12 AM
Last modification on : Thursday, April 19, 2018 - 2:54:03 PM
Long-term archiving on : Wednesday, March 21, 2012 - 2:30:53 AM

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  • HAL Id : ensl-00653786, version 1
  • ARXIV : 1112.5244

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Juan Ruben Gomez-Solano, Artyom Petrosyan, Sergio Ciliberto. Fluctuations, linear response and heat flux of an aging system. 2011. ⟨ensl-00653786v1⟩

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