A hitchhiker's guide to active motion.

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Tác giả: Hartmut Löwen, Paul A Monderkamp, Tobias Plasczyk, René Wittmann

Ngôn ngữ: eng

Ký hiệu phân loại: 781.232 *Pitch

Thông tin xuất bản: France : The European physical journal. E, Soft matter , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 176350

Intelligent decisions in response to external informative input can allow organisms to achieve their biological goals while spending very little of their own resources. In this paper, we develop and study a minimal model for a navigational task, performed by an otherwise completely motorless particle that possesses the ability of hitchhiking in a bath of active Brownian particles (ABPs). Hitchhiking refers to identifying and attaching to suitable surrounding bath particles. Using a reinforcement learning algorithm, such an agent, which we refer to as intelligent hitchhiking particle (IHP), is enabled to persistently navigate in the desired direction. This relatively simple IHP can also anticipate and react to characteristic motion patterns of their hosts, which we exemplify for a bath of chiral ABPs (cABPs). To demonstrate that the persistent motion of the IHP will outperform that of the bath particles in view of long-time ballistic motion, we calculate the mean-squared displacement and discuss its dependence on the density and persistence time of the bath ABPs by means of an analytic model.
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