Emergent run-and-tumble behavior in a simple model of Chlamydomonas with 
intrinsic noise

Bennett, R. R.; Golestanian, Ramin

doi:10.1103/PhysRevLett.110.148102

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Emergent run-and-tumble behavior in a simple model of Chlamydomonas with intrinsic noise

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Golestanian, Ramin
Department of Living Matter Physics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Bennett, R. R., & Golestanian, R. (2013). Emergent run-and-tumble behavior in a simple model of Chlamydomonas with intrinsic noise. Physical Review Letters, 110(14): 148102. doi:10.1103/PhysRevLett.110.148102.

Cite as: https://hdl.handle.net/21.11116/0000-0001-777C-F

Abstract

Recent experiments on the green alga Chlamydomonas that swims using synchronized beating of a pair of flagella have revealed that it exhibits a run-and-tumble behavior similar to that of bacteria such as E. coli. Using a simple purely hydrodynamic model that incorporates a stroke cycle and an intrinsic Gaussian white noise, we show that a stochastic run-and-tumble behavior could emerge due to the nonlinearity of the combined synchronization-rotation-translation dynamics. Our study suggests that nonlinear mechanics could be a significant contributing factor to how the trajectories of the microorganism are selected. © 2013 American Physical Society.