2026-06-08T09:32:22Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/44402023-08-25T11:57:47Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Roldán, Édgar
author
Barral, Jérémie
author
Martin, Pascal
author
Rodríguez Parrondo, Juan Manuel
author
Jülicher, Frank
2023-06-16T14:16:04Z
2023-06-16T14:16:04Z
2021-08
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/
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.
eng
Atribución 3.0 España
Quantifying entropy production in active fluctuations of the hair-cell bundle from time irreversibility and uncertainty relations
journal article
URL
https://docta.ucm.es/bitstreams/a39f5060-b768-49f4-a950-9714b6e16dc0/download
File
MD5
6f250284013639d5d14b1820f2317ede
4104680
application/pdf
RParrondo30libre+CC.pdf