{
  "id": "0910.5245",
  "version": "v1",
  "published": "2009-10-28T19:15:03.000Z",
  "updated": "2009-10-28T19:15:03.000Z",
  "title": "Linearized Lorentz-Violating Gravity and Discriminant Locus in the Moduli Space of Mass Terms",
  "authors": [
    "Andrei Mironov",
    "Sergey Mironov",
    "Alexei Morozov",
    "Andrey Morozov"
  ],
  "comment": "29 pages",
  "journal": "J.Phys.A43:055402,2010",
  "doi": "10.1088/1751-8113/43/5/055402",
  "categories": [
    "hep-th",
    "gr-qc",
    "hep-ph"
  ],
  "abstract": "We analyze the pattern of normal modes in linearized Lorentz-violating massive gravity over the 5-dimensional moduli space of mass terms. Ghost-free theories arise at bifurcation points when the ghosts get out of the spectrum of propagating particles due to vanishing of the coefficient in front of \\omega^2 in the propagator. Similarly, the van Dam-Veltman-Zakharov (DVZ) discontinuities in the Newton law arise at another type of bifurcations, when the coefficient vanishes in front of \\vec k^2. When the Lorentz invariance is broken, these two kinds of bifurcations get independent and one can easily find a ghost-free model without the DVZ discontinuity in the moduli space, at least, in the quadratic (linearized) approximation.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-10-28T19:15:03.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "moduli space",
      "linearized lorentz-violating gravity",
      "mass terms",
      "discriminant locus",
      "newton law arise"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Journal of Physics A Mathematical General",
      "year": 2010,
      "month": "Feb",
      "volume": 43,
      "number": 5,
      "pages": "055402"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 29,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 835379,
      "adsabs": "2010JPhA...43e5402M"
    }
  }
}