Enhanced diffusion of a tracer particle in a lattice model of a crowded active system.

  title={Enhanced diffusion of a tracer particle in a lattice model of a crowded active system.},
  author={Leila Abbaspour and Stefan Klumpp},
  journal={Physical review. E},
  volume={103 5-1},
Living systems at the subcellular, cellular, and multicellular levels are often crowded systems that contain active particles. The active motion of these particles can also propel passive particles, which typically results in enhanced effective diffusion of the passive particles. Here we study the diffusion of a passive tracer particle in such a dense system of active crowders using a minimal lattice model incorporating particles pushing each other. We show that the model exhibits several… 

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