{
  "id": "hep-th/0503146",
  "version": "v1",
  "published": "2005-03-18T23:44:05.000Z",
  "updated": "2005-03-18T23:44:05.000Z",
  "title": "A Quantum Gravitational Relaxation of The Cosmological Constant",
  "authors": [
    "Stephon Alexander"
  ],
  "comment": "6 pages",
  "journal": "Phys.Lett. B629 (2005) 53-59",
  "doi": "10.1016/j.physletb.2005.09.026",
  "categories": [
    "hep-th",
    "astro-ph",
    "gr-qc",
    "hep-ph"
  ],
  "abstract": "Similar to QCD, general relativity has a $\\Theta$ sector due to large diffeomorphisms. We make explicit, for the first time, that the gravitational CP violating $\\Theta$ parameter is non-perturbatively related to the cosmological constant. A gravitational pseudoscalar coupling to massive fermions gives rise to general relativity from a topological $B\\wedge F$ theory through a chiral symmetry breaking mechanism. We show that a gravitational Peccei-Quinn like mechanism can dynamically relax the cosmological constant.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2005-03-18T23:44:05.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "98.70.Vc",
      "98.80.Cq"
    ],
    "keywords": [
      "quantum gravitational relaxation",
      "cosmological constant",
      "general relativity",
      "chiral symmetry breaking mechanism",
      "gravitational peccei-quinn"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 678773
    }
  }
}