{
  "id": "1108.1225",
  "version": "v2",
  "published": "2011-08-04T22:29:01.000Z",
  "updated": "2011-08-08T21:14:46.000Z",
  "title": "Statistical Mechanics of the Anomalous Behavior of Tetrahedral Liquids",
  "authors": [
    "Itamar Procaccia",
    "Ido Regev"
  ],
  "categories": [
    "cond-mat.stat-mech",
    "physics.chem-ph"
  ],
  "abstract": "Tetrahedral liquids such as water and silica-melt show unusual thermodynamic behavior such as a density maximum and an increase in specific-heat when cooled to low temperatures. There is a debate in the literature whether these phenomena stem from a phase transition into a low-density and high-density liquid phases, which occur in the supercooled regime. Here we consider a model of tetrahedral liquids for which we construct a volume-constrained statistical mechanical theory which quantifies the local structure of the liquid. We compare the theory to molecular dynamics simulations and show that the theory can rationalize the simulations semi-quantitatively. We show that the anomalous density and specific heat behavior arise naturally from this theory without exhibiting a liquid-liquid phase-transition. We explain that this theory may or may not have a phase transition, depending on the volume and temperature dependence of the energy and entropy which are sensitive to small changes in the parameters of the model.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2011-08-08T21:14:46.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "tetrahedral liquids",
      "anomalous behavior",
      "statistical mechanics",
      "specific heat behavior arise",
      "phase transition"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011arXiv1108.1225P"
    }
  }
}