Energetics of active fluctuations in living cellReport as inadecuate

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1 MSC - Matière et Systèmes Complexes 2 Yukawa Institute for Theoretical Physics

Abstract : The nonequilibrium activity taking place in a living cell can be monitored with a tracer embedded in the medium. While microrheology experiments based on optical manipulation of such probes have become increasingly standard, we put forward a number of experiments with alternative protocols that, we claim, will provide new insight into the energetics of active fluctuations. These are based on either performing thermodynamic–like cycles in control-parameter space, or on determining response to external perturbations of the confining trap beyond simple translation. We illustrate our proposals on an active itinerant Brownian oscillator modeling the dynamics of a probe embedded in a living medium.

Author: Étienne Fodor - Kiyoshi Kanazawa - Hisao Hayakawa - Paolo Visco - Frédéric Van Wijland -

Source: https://hal.archives-ouvertes.fr/


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