{
  "id": "2307.12816",
  "version": "v1",
  "published": "2023-07-24T14:13:04.000Z",
  "updated": "2023-07-24T14:13:04.000Z",
  "title": "Non-equilibrium memory effects: granular fluids and beyond",
  "authors": [
    "A Patrón",
    "B. Sánchez-Rey",
    "C. A. Plata",
    "A. Prados"
  ],
  "comment": "Perspective paper for EPL, 7 pages, 6 figures",
  "categories": [
    "cond-mat.stat-mech",
    "cond-mat.soft"
  ],
  "abstract": "In this perspective paper, we look into memory effects in out-of-equilibrium systems. To be concrete, we exemplify memory effects with the paradigmatic case of granular fluids, although extensions to other contexts such as molecular fluids with non-linear drag are also considered. The focus is put on two archetypal memory effects: the Kovacs and Mpemba effects. In brief, the first is related to imperfectly reaching a steady state -- either equilibrium or non-equilibrium, whereas the second is related to reaching a steady state faster despite starting further. Connections to optimal control theory thus naturally emerge and are briefly discussed.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-07-24T14:13:04.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "non-equilibrium memory effects",
      "granular fluids",
      "steady state faster despite starting",
      "optimal control theory",
      "archetypal memory effects"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}