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Fluctuations of rotational and translational degrees of freedom in an interacting active dumbbell system

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  • Cugliandolo, Leticia F.
  • Gonnella, Giuseppe
  • Suma, Antonio

Abstract

We study the dynamical properties of a two-dimensional ensemble of self-propelled dumbbells with only repulsive interactions. After summarizing the behavior of the translational and rotational mean-square displacements in the homogeneous phase that we established in a previous study, we analyze their fluctuations. We study the dependence of the probability distribution functions in terms of the Péclet number, describing the relative role of active forces and thermal fluctuations, and of particle density.

Suggested Citation

  • Cugliandolo, Leticia F. & Gonnella, Giuseppe & Suma, Antonio, 2015. "Fluctuations of rotational and translational degrees of freedom in an interacting active dumbbell system," Chaos, Solitons & Fractals, Elsevier, vol. 81(PB), pages 556-566.
    • Handle: RePEc:eee:chsofr:v:81:y:2015:i:pb:p:556-566
    DOI: 10.1016/j.chaos.2015.04.015
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    References listed on IDEAS

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    1. Giuseppe Gonnella & Antonio Lamura & Antonio Suma, 2014. "Phase segregation in a system of active dumbbells," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 25(12), pages 1-9.
    2. De Magistris, G. & Marenduzzo, D., 2015. "An introduction to the physics of active matter," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 418(C), pages 65-77.
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    Cited by:

    1. Fang, Yuwen & Luo, Yuhui & Ma, Zhiqing & Zeng, Chunhua, 2021. "Transport and diffusion in the Schweitzer–Ebeling–Tilch model driven by cross-correlated noises," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 564(C).
    2. Scharf, Yael, 2017. "A chaotic outlook on biological systems," Chaos, Solitons & Fractals, Elsevier, vol. 95(C), pages 42-47.

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    Keywords

    Diffusion processes; Active matter;

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