A model fluid comprising rotating magnetic particles behaves according to the equations of hydrodynamics, but for a few key differences due to broken mirror symmetry. The resulting active chiral fluid is characterized by parity-odd Hall viscosity.
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Abanov, A. Model oddity. Nat. Phys. 15, 1109–1110 (2019). https://doi.org/10.1038/s41567-019-0633-2
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DOI: https://doi.org/10.1038/s41567-019-0633-2
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