Three-body correlations and conditional forces in suspensions of active hard disks.

  title={Three-body correlations and conditional forces in suspensions of active hard disks.},
  author={Andreas H{\"a}rtel and David Richard and Thomas Speck},
  journal={Physical review. E},
  volume={97 1-1},
Self-propelled Brownian particles show rich out-of-equilibrium physics, for instance, the motility-induced phase separation (MIPS). While decades of studying the structure of liquids have established a deep understanding of passive systems, not much is known about correlations in active suspensions. In this work we derive an approximate analytic theory for three-body correlations and forces in systems of active Brownian disks starting from the many-body Smoluchowski equation. We use our theory… 

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