How irreversible are steady-state trajectories of a trapped active particle?
Dabelow, Lennart
Bo, Stefano
Eichhorn, Ralf
Statistics
Probability and Uncertainty
Statistics and Probability
Statistical and Nonlinear Physics
<jats:title>Abstract</jats:title>
<jats:p>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 Ornsteinâ€“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.</jats:p>
IOP Publishing
2021
info:eu-repo/semantics/article
doc-type:article
text
http://purl.org/coar/resource_type/c_6501
https://ris.uni-paderborn.de/record/32243
Dabelow L, Bo S, Eichhorn R. How irreversible are steady-state trajectories of a trapped active particle? <i>Journal of Statistical Mechanics: Theory and Experiment</i>. 2021;2021(3). doi:<a href="https://doi.org/10.1088/1742-5468/abe6fd">10.1088/1742-5468/abe6fd</a>
eng
info:eu-repo/semantics/altIdentifier/doi/10.1088/1742-5468/abe6fd
info:eu-repo/semantics/altIdentifier/issn/1742-5468
info:eu-repo/semantics/closedAccess