Author： Gomez-Solano J. R. Petrosyan A. Ciliberto S.
Publisher： Edp Sciences
E-ISSN： 1286-4854|98|1|10007-10007
ISSN： 0295-5075
Source： EPL (EUROPHYSICS LETTERS), Vol.98, Iss.1, 2012-04, pp. : 10007-10007
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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 non-equilibrium 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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