{
  "id": "hep-ph/9904495",
  "version": "v1",
  "published": "1999-04-29T18:33:22.000Z",
  "updated": "1999-04-29T18:33:22.000Z",
  "title": "Inflation from Extra Dimensions",
  "authors": [
    "James M. Cline"
  ],
  "comment": "4 pages, 4 figures, uses epsf.tex",
  "journal": "Phys.Rev.D61:023513,2000",
  "doi": "10.1103/PhysRevD.61.023513",
  "categories": [
    "hep-ph"
  ],
  "abstract": "The radial mode of n extra compact dimensions (the radion, b) can cause inflation in theories where the fundamental gravity scale, M, is smaller than the Planck scale M_P. For radion potentials V(b) with a simple polynomial form, to get the observed density perturbations, the energy scale of V(b) must greatly exceed M ~ 1 TeV: V(b)^{1/4} = M_v ~ 10^{-4} M_P. This gives a large radion mass and reheat temperature ~ 10^9 GeV, thus avoiding the moduli problem. Such a value of M_v can be consistent with the classical treatment if the new dimensions started sufficiently small. A new possibility is that b approaches its stable value from above during inflation. The same conclusions about M_v may hold even if inflation is driven by matter fields rather than by the radion.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1999-04-29T18:33:22.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "extra dimensions",
      "extra compact dimensions",
      "fundamental gravity scale",
      "simple polynomial form",
      "large radion mass"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 499099
    }
  }
}