Transport and diffusion in the Schweitzer–Ebeling–Tilch model driven by cross-correlated noises

Yuwen Fang, Yuhui Luo, Zhiqing Ma and Chunhua Zeng

Physica A: Statistical Mechanics and its Applications, 2021, vol. 564, issue C

Abstract: We investigate the transport properties of active Brownian particle (ABP) in the Schweitzer–Ebeling–Tilch (SET) model, driven by cross-correlation between multiplicative and additive noises and a bias force. It is shown that (i) the cross-correlated noises and bias force can lead to a transition from bimodal to unimodal, and the numerical simulations are in good agreement with the theoretical results; (ii) the cross-correlated noises and bias force can enhance the transport and weaken the diffusion of the ABP; (iii) the multiplicative noise can facilitate the transport and enhance the diffusion of the ABP, and a giant diffusion by a larger multiplicative noise, whereas the additive noise can weaken the transport of the ABP. A physical mechanism for the transport and diffusion of the ABP is derived from the effective velocity potential for the above findings; and (iv) the cross-correlated noises and bias force can enhance the collective motion of coupled active Brownian particles (ABPs), i.e., better synchronization between N coupled ABPs. It can provide a possible strategy for controlling active motion.

Date: 2021
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:564:y:2021:i:c:s0378437120308013

DOI: 10.1016/j.physa.2020.125503

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