{
  "id": "cond-mat/9802112",
  "version": "v2",
  "published": "1998-02-11T06:53:14.000Z",
  "updated": "1998-03-30T22:51:31.000Z",
  "title": "Evidence for growth of collective excitations in glasses at low temperatures",
  "authors": [
    "Douglas Natelson",
    "Danna Rosenberg",
    "D. D. Osheroff"
  ],
  "comment": "5 pages, 3 figures, submitted to Phys Rev Lett",
  "doi": "10.1103/PhysRevLett.80.4689",
  "categories": [
    "cond-mat.dis-nn"
  ],
  "abstract": "We present new data on the nonequilibrium acoustic response of glasses to an applied dc electric field below 1K. When compared with the analogous dielectric response of the same material, the acoustic data show, within experimental precision, identical dependence on the perturbing field, but stronger temperature dependence. These data are difficult to reconcile with simple generalizations of the dipole gap model of two-level system (TLS) dielectric response, unless we assume that as T is decreased, interaction-based TLS collective effects increase.",
  "revisions": [
    {
      "version": "v2",
      "updated": "1998-03-30T22:51:31.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "low temperatures",
      "collective excitations",
      "dielectric response",
      "applied dc electric field",
      "interaction-based tls collective effects increase"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}