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- W3197925479 abstract "Abstract We consider the motion of an active Brownian particle with speed fluctuations in d -dimensions in the presence of both translational and orientational diffusion. We use an Ornstein–Uhlenbeck process for active speed generation. Using a Laplace transform approach, we describe and use a Fokker–Planck equation-based method to evaluate the exact time dependence of all relevant dynamical moments. We present explicit calculations of several such moments and compare our analytical predictions against numerical simulations to demonstrate and analyze the dynamical crossovers, determined by the orientational persistence of activity, speed fluctuation and relaxation. The kurtosis of displacement shows positive and negative deviations from a Gaussian behavior at intermediate times depending on the dominance of speed and orientational fluctuations, respectively." @default.
- W3197925479 created "2021-09-13" @default.
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- W3197925479 creator A5067440454 @default.
- W3197925479 date "2022-01-01" @default.
- W3197925479 modified "2023-09-27" @default.
- W3197925479 title "Active Brownian motion with speed fluctuations in arbitrary dimensions: exact calculation of moments and dynamical crossovers" @default.
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- W3197925479 doi "https://doi.org/10.1088/1742-5468/ac403f" @default.
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