Symmetry properties of fluctuations in an actively driven rotor |
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Authors: | He Li Xiang Yang Hepeng Zhang |
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Affiliation: | (School of Physics and Astronomy and Institute of Natural Sciences,Shanghai Jiao Tong University,Shanghai 200240,China;Collaborative Innovation Center of Advanced Microstructures,Nanjing 210023,China) |
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Abstract: | We investigate rotational dynamics of an actively driven rotor through experiments and numerical simulations. While probability density distributions of rotor angular velocity are strongly non-Gaussian, relative probabilities of observing rotation in opposite directions are shown to be linearly related to the angular velocity magnitude. We construct a stochastic model to describe transitions between different states from rotor angular velocity data and use the stochastic model to show that symmetry properties in probability density distributions are related to the detailed fluctuation relation(FR) of entropy productions. |
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