{
  "id": "astro-ph/0508572",
  "version": "v1",
  "published": "2005-08-26T06:04:26.000Z",
  "updated": "2005-08-26T06:04:26.000Z",
  "title": "Observational Evidence for Extra Dimensions from Dark Matter",
  "authors": [
    "Bo Qin",
    "Ue-Li Pen",
    "Joseph Silk"
  ],
  "comment": "4 pages, no figure, submitted to PRL",
  "categories": [
    "astro-ph",
    "hep-ph"
  ],
  "abstract": "Recent astronomical observations of systems of dark matter, which have been cited as providing possible support for self-interacting cold dark matter, may provide evidence for the extra dimensions predicted by superstring scenarios. We find that the properties of the required dark matter self-interaction are precisely the consequences of a world with 3 large extra dimensions of size \\~1nm, where gravity follows the r^{-5} law at scales below ~1nm. From the cross sections measured for various dark matter systems, we also constrain the mass of dark matter particles to be m_x ~ 3*10^{-16} proton mass, consistent with the mass of axions.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2005-08-26T06:04:26.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "95.35.+d",
      "11.25.Wx",
      "11.10.Kk"
    ],
    "keywords": [
      "observational evidence",
      "self-interacting cold dark matter",
      "dark matter systems",
      "large extra dimensions",
      "dark matter self-interaction"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 690831,
      "adsabs": "2005astro.ph..8572Q"
    }
  }
}