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- W4297001346 abstract "We investigate how the competing presence of a nonuniform motility landscape and an external confining field affects the properties of active particles. We employ the active Ornstein-Uhlenbeck particle (AOUP) model with a periodic swim-velocity profile to derive analytical approximations for the steady-state probability distribution of position and velocity, encompassing both the Unified Colored Noise Approximation and the theory of potential-free active particles with spatially dependent swim velocity recently developed. We test the theory by confining an active particle in a harmonic trap, which gives rise to interesting properties, such as a transition from a unimodal to a bimodal (and, eventually multimodal) spatial density, induced by decreasing the spatial period of the self propulsion. Correspondingly, the velocity distribution shows pronounced deviations from the Gaussian shape, even displaying a bimodal profile in the high-motility regions. We thus show that the interplay of two relatively simple physical fields can be employed to generate complex emerging behavior." @default.
- W4297001346 created "2022-09-25" @default.
- W4297001346 creator A5028221319 @default.
- W4297001346 creator A5029898116 @default.
- W4297001346 creator A5034105555 @default.
- W4297001346 creator A5068737620 @default.
- W4297001346 date "2022-09-23" @default.
- W4297001346 modified "2023-10-14" @default.
- W4297001346 title "Active particles driven by competing spatially dependent self-propulsion and external force" @default.
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