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oai:docta.ucm.es:20.500.14352/44402023-08-25T11:57:47Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Roldán, Édgar author Barral, Jérémie author Martin, Pascal author Rodríguez Parrondo, Juan Manuel author Jülicher, Frank author 2021-08 We introduce lower bounds for the rate of entropy production of an active stochastic process by quantifying the irreversibility of stochastic traces obtained from mesoscopic degrees of freedom. Our measures of irreversibility reveal signatures of time's arrow and provide bounds for entropy production even in the case of active fluctuations that have no drift. We apply these irreversibility measures to experimental recordings of spontaneous hair-bundle oscillations in mechanosensory hair cells from the ear of the bullfrog. By analyzing the fluctuations of only the tip position of hair bundles, we reveal irreversibility in active oscillations and estimate an associated rate of entropy production of at least similar to 3k (B)/s, on average. Applying thermodynamic uncertainty relations, we predict that measuring both the tip position of the hair bundle and the mechano-electrical transduction current that enters the hair cell leads to tighter lower bounds for the rate of entropy production, up to similar to 10(3) k (B)/s in the oscillatory regime. 1367-2630 10.1088/1367-2630/ac0f18 https://hdl.handle.net/20.500.14352/4440 https://doi.org/10.1088/1367-2630/ac0f18 https://iopscience.iop.org/ Quantifying entropy production in active fluctuations of the hair-cell bundle from time irreversibility and uncertainty relations