{
  "id": "1612.08404",
  "version": "v1",
  "published": "2016-12-26T15:30:18.000Z",
  "updated": "2016-12-26T15:30:18.000Z",
  "title": "Microscopic derivation of the hydrodynamics of active-Brownian-particle suspensions",
  "authors": [
    "Stefano Steffenoni",
    "Gianmaria Falasco",
    "Klaus Kroy"
  ],
  "categories": [
    "cond-mat.stat-mech",
    "cond-mat.soft"
  ],
  "abstract": "We derive the hydrodynamic equations of motion for a fluid of active particles described by under- damped Langevin equations that reduce to the Active-Brownian-Particle model, in the overdamped limit. The contraction into the hydrodynamic description is performed by locally averaging the par- ticle dynamics with the non-equilibrium many-particle probability density, whose formal expression is found in the physically relevant limit of high-friction through a multiple-time-scale analysis. This approach permits to identify the conditions under which self-propulsion can be subsumed into the fluid stress tensor and thus to define systematically and unambiguously the local pressure of the active fluid.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-12-26T15:30:18.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "active-brownian-particle suspensions",
      "microscopic derivation",
      "non-equilibrium many-particle probability density",
      "fluid stress tensor",
      "hydrodynamic description"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}