How irreversible are steady-state trajectories of a trapped active particle?

Dabelow L, Bo S, Eichhorn R (2021)
Journal of Statistical Mechanics: Theory and Experiment 2021(3): 033216.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Dabelow, LennartUniBi; Bo, Stefano; Eichhorn, Ralf
Abstract / Bemerkung
The defining feature of active particles is that they constantly propel themselves by locally converting chemical energy into directed motion. This active self-propulsion prevents them from equilibrating with their thermal environment (e.g. an aqueous solution), thus keeping them permanently out of equilibrium. Nevertheless, the spatial dynamics of active particles might share certain equilibrium features, in particular in the steady state. We here focus on the time-reversal symmetry of individual spatial trajectories as a distinct equilibrium characteristic. We investigate to what extent the steady-state trajectories of a trapped active particle obey or break this time-reversal symmetry. Within the framework of active Ornstein-Uhlenbeck particles we find that the steady-state trajectories in a harmonic potential fulfill path-wise time-reversal symmetry exactly, while this symmetry is typically broken in anharmonic potentials.
Stichworte
active matter; Brownian motion; stochastic thermodynamics; stochastic; particle dynamics
Erscheinungsjahr
2021
Zeitschriftentitel
Journal of Statistical Mechanics: Theory and Experiment
Band
2021
Ausgabe
3
Art.-Nr.
033216
eISSN
1742-5468
Page URI
https://pub.uni-bielefeld.de/record/2953396

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Dabelow L, Bo S, Eichhorn R. How irreversible are steady-state trajectories of a trapped active particle? Journal of Statistical Mechanics: Theory and Experiment. 2021;2021(3): 033216.
Dabelow, L., Bo, S., & Eichhorn, R. (2021). How irreversible are steady-state trajectories of a trapped active particle? Journal of Statistical Mechanics: Theory and Experiment, 2021(3), 033216. https://doi.org/10.1088/1742-5468/abe6fd
Dabelow, L., Bo, S., and Eichhorn, R. (2021). How irreversible are steady-state trajectories of a trapped active particle? Journal of Statistical Mechanics: Theory and Experiment 2021:033216.
Dabelow, L., Bo, S., & Eichhorn, R., 2021. How irreversible are steady-state trajectories of a trapped active particle? Journal of Statistical Mechanics: Theory and Experiment, 2021(3): 033216.
L. Dabelow, S. Bo, and R. Eichhorn, “How irreversible are steady-state trajectories of a trapped active particle?”, Journal of Statistical Mechanics: Theory and Experiment, vol. 2021, 2021, : 033216.
Dabelow, L., Bo, S., Eichhorn, R.: How irreversible are steady-state trajectories of a trapped active particle? Journal of Statistical Mechanics: Theory and Experiment. 2021, : 033216 (2021).
Dabelow, Lennart, Bo, Stefano, and Eichhorn, Ralf. “How irreversible are steady-state trajectories of a trapped active particle?”. Journal of Statistical Mechanics: Theory and Experiment 2021.3 (2021): 033216.

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