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Article Dans Une Revue Physical Review E Année : 2024

Inertia suppresses signatures of activity of active Brownian particles in a harmonic potential

Résumé

A harmonically trapped active Brownian particle exhibits two types of positional distributions—one has a single peak and the other has a single well—that signify steady-state dynamics with low and high activity, respectively. Adding inertia to the translational motion preserves this strict classification of either single-peak or single-well densities but shifts the dividing boundary between the states in the parameter space. We characterize this shift for the dynamics in one spatial dimension using the static Fokker-Planck equation for the full joint distribution of the state space. We derive local results analytically with a perturbation method for a small rotational velocity and then extend them globally with a numerical approach.

Dates et versions

hal-04566231 , version 1 (02-05-2024)

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Angelica Arredondo, Catania Calavitta, Mauricio Gomez, Jose Mendez-Villanueva, Wylie W. Ahmed, et al.. Inertia suppresses signatures of activity of active Brownian particles in a harmonic potential. Physical Review E , 2024, 109 (3), pp.034405. ⟨10.1103/PhysRevE.109.034405⟩. ⟨hal-04566231⟩
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