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arXiv · 2411.12368

Transition-path sampling for Run-and-Tumble particles

Thomas Kiechl·Thomas Franosch·Michele Caraglio
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Abstract

We elaborate and validate a generalization of the renowned transition-path-sampling algorithm for a paradigmatic model of active particles, namely the Run-and-Tumble particles. Notwithstanding the non-equilibrium character of these particles, we show how the consequent lack of the microscopical reversibility property, which is usually required by transition-path sampling, can be circumvented by identifying reasonable backward dynamics with a well-defined path-probability density. Our method is then applied to characterize the structure and kinetics of rare transition pathways undergone by Run-and-Tumble particles having to cross a potential barrier in order to find a target.

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Thomas Kiechl, Thomas Franosch, Michele Caraglio. 2024-11-19. Transition-path sampling for Run-and-Tumble particles. https://doi.org/10.1103/physreve.110.054121

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