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- W4385714344 abstract "Shape asymmetry is the most abundant in nature and attracted great interest in recent research. The phenomenon is widely recognized: a free ellipsoidal Brownian particle displays anisotropic diffusion during short time intervals, which subsequently transitions to an isotropic diffusion pattern over longer time scales. We have further expanded this concept to incorporate active ellipsoidal particles characterized by an initial self-propelled velocity. In our previous studycite{ghosh2022persistence}, we derived the analytical expressions and simulation results of the persistence probability of an active anisotropic particle without any external potential and with an external harmonic potential. This paper provides analytical and simulation results of diffusion coefficients of an active ellipsoidal particle. In comparison to a passive particle, we demonstrate that the long-term diffusion coefficient of an active particle is influenced by both the magnitude of the propulsion velocity and the rotational diffusion coefficient. We have also studied the approximations of different results for diffusion coefficients in $tll D_theta^{-1}$ time-scale. We investigated diffusion dynamics for the free particle as well as the particle in a harmonic trap, and the particle subject to a constant field force. Additionally, we have studied the scaled average velocity of an ellipsoidal active particle in different force fields. We show analytically and numerically that the long-term diffusion coefficient is altered by the presence of external forces in comparison to a free particle." @default.
- W4385714344 created "2023-08-10" @default.
- W4385714344 creator A5036297273 @default.
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- W4385714344 date "2023-08-07" @default.
- W4385714344 modified "2023-09-26" @default.
- W4385714344 title "Diffusion dynamics of an overdamped active ellipsoidal particle in two dimensions" @default.
- W4385714344 doi "https://doi.org/10.48550/arxiv.2308.03451" @default.
- W4385714344 hasPublicationYear "2023" @default.
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