{
  "id": "1509.03433",
  "version": "v1",
  "published": "2015-09-11T09:25:41.000Z",
  "updated": "2015-09-11T09:25:41.000Z",
  "title": "Vanishing of configurational entropy may not imply an ideal glass transition in randomly pinned liquids",
  "authors": [
    "Saurish Chakrabarty",
    "Smarajit Karmakar",
    "Chandan Dasgupta"
  ],
  "journal": "Proc. Natl. Acad. of Sci (USA), 201512745 (2015)",
  "categories": [
    "cond-mat.stat-mech"
  ],
  "abstract": "Ozawa et. al [1] presented numerical results for the configurational entropy density, $s_c$, of a model glass-forming liquid in the presence of random pinning. The location of a \"phase boundary\" in the pin density ($c$) - temperature ($T$) plane, that separates an \"ideal glass\" phase from the supercooled liquid phase, is obtained by finding the points at which $s_c(T,c) \\to 0$. According to the theoretical arguments by Cammarota et. al. [2], an ideal glass transition at which the $\\alpha$-relaxation time $\\tau_\\alpha$ diverges takes place when $s_c$ goes to zero. We have studied the dynamics of the same system using molecular dynamics simulations. We have calculated the time-dependence of the self intermediate scattering function, $F_s(k,t)$ at three state points in the $(c-T)$ plane where $s_c(T,c) \\simeq 0$ according to Ref. [1]. It is clear from the plots that the relaxation time is finite [$\\tau_\\alpha \\sim \\mathcal{O}(10^6)]$ at these state points. Similar conclusions have been obtained in Ref.[3] where an overlap function was used to calculate $\\tau_\\alpha$ at these state points.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-09-11T09:25:41.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "ideal glass transition",
      "randomly pinned liquids",
      "state points",
      "relaxation time",
      "self intermediate scattering function"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "USNAS",
      "journal": "Proceedings of the National Academy of Science",
      "doi": "10.1073/pnas.1512745112",
      "year": 2015,
      "month": "Sep",
      "volume": 112,
      "number": 35
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2015PNAS..112E4819C"
    }
  }
}