Orientation fluctuations in magnetotactic swimming
Institute for the Dynamics of Complex Systems, University of Göttingen, Friedrich-Hund-Platz 1, 37077, Göttingen, Germany
2 Faculty of Physics, University of Regensburg, Universitätsstraße 31, 93051, Regensburg, Germany
Accepted: 5 January 2021
Published online: 15 April 2021
The fluctuations experienced by magnetic microswimmers in a magnetic field often have non-thermal contributions, in particular in the case of biological swimmers such as magnetotactic bacteria. Here we study a model for an active self-propelled particle subject to correlated internal noise as a model for the active, non-thermal noise contribution and determine the effect of the correlation time on the diffusion of the swimmer and on its orientation in a magnetic field. A description in terms of an effective temperature is possible, but has limitations.
© The Author(s) 2021
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