{
  "id": "1205.5161",
  "version": "v1",
  "published": "2012-05-23T12:01:24.000Z",
  "updated": "2012-05-23T12:01:24.000Z",
  "title": "Can effects of quantum gravity be observed in the cosmic microwave background?",
  "authors": [
    "Claus Kiefer",
    "Manuel Kraemer"
  ],
  "comment": "5 pages, 1 figure, essay awarded first prize in the Gravity Research Foundation essay competition 2012",
  "journal": "Int. J. Mod. Phys. D 21 (2012) 1241001",
  "doi": "10.1142/S0218271812410015",
  "categories": [
    "gr-qc"
  ],
  "abstract": "We investigate the question whether small quantum-gravitational effects can be observed in the anisotropy spectrum of the cosmic microwave background radiation. An observation of such an effect is needed in order to discriminate between different approaches to quantum gravity. Using canonical quantum gravity with the Wheeler-DeWitt equation, we find a suppression of power at large scales. Current observations only lead to an upper bound on the energy scale of inflation, but the framework is general enough to study other situations in which such effects might indeed be seen.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-05-23T12:01:24.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "cosmic microwave background radiation",
      "small quantum-gravitational effects",
      "canonical quantum gravity",
      "anisotropy spectrum",
      "wheeler-dewitt equation"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "International Journal of Modern Physics D",
      "year": 2012,
      "month": "Oct",
      "volume": 21,
      "number": 11,
      "pages": 1241001
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1115716,
      "adsabs": "2012IJMPD..2141001K"
    }
  }
}