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Authors
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Faedi, F.; Kalz, E.; Metzler, R.; Sharma, A.
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Title
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A mobility based approach to transport in chiral fluids
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Date
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28.05.2026
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Number
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0
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Abstract
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Chiral fluids, for which the mobility tensor has antisymmetric, off-diagonal components, exhibit transport phenomena absent in conventional systems, including interaction-enhanced diffusion and negative mobility. While these effects have been predicted theoretically and observed in simulations, their microscopic origin has remained unclear. Here, we address this question using a mobility-based nonequilibrium approach, analysing the steady-state drift of a tracer driven through an interacting chiral fluid. We show that, under strong chirality, the tracer generates a reversed density wake, in which regions of particle accumulation and depletion are inverted compared to the achiral case. This structural inversion of the wake provides a unified physical mechanism underlying both enhanced diffusion and negative mobility. Furthermore, we demonstrate that these phenomena are robust to changes in the interaction potential, highlighting their generality as a consequence of odd mobility.
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Publisher
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Institute of Physics Publishing
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Wikidata
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Citation
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New Journal of Physics 28 (2026) 063501
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DOI
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https://doi.org/10.1088/1367-2630/ae6e97
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Tags
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