{
  "id": "2103.09358",
  "version": "v1",
  "published": "2021-03-16T23:01:10.000Z",
  "updated": "2021-03-16T23:01:10.000Z",
  "title": "Heat fluctuations in a harmonic chain of active particles",
  "authors": [
    "Deepak Gupta",
    "David A. Sivak"
  ],
  "comment": "28 pages, 4 figures",
  "categories": [
    "cond-mat.stat-mech"
  ],
  "abstract": "One of the major challenges in stochastic thermodynamics is to compute the distributions of stochastic observables for small-scale systems for which fluctuations play a significant role. Hitherto much theoretical and experimental research has focused on systems composed of passive Brownian particles. In this paper, we study the heat fluctuations in a system of interacting active particles. Specifically we consider a one-dimensional harmonic chain of $N$ active Ornstein-Uhlenbeck particles, with the chain ends connected to heat baths of different temperatures. We compute the moment-generating function for the heat flow in the steady state. We employ our general framework to explicitly compute the moment-generating function for two example single-particle systems. Further, we analytically obtain the scaled cumulants for the heat flow for the chain. Numerical Langevin simulations confirm the long-time analytical expressions for first and second cumulants for the heat flow for a two-particle chain.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-03-16T23:01:10.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "heat fluctuations",
      "active particles",
      "heat flow",
      "numerical langevin simulations confirm",
      "example single-particle systems"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 28,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}