{
  "id": "0712.3254",
  "version": "v1",
  "published": "2007-12-19T18:55:33.000Z",
  "updated": "2007-12-19T18:55:33.000Z",
  "title": "Pygmy dipole response of proton rich argon beyond the random phase approximation",
  "authors": [
    "C. Barbieri",
    "E. Caurier",
    "K. Langanke",
    "G. Martínez-Pinedo"
  ],
  "comment": "Submitted to Phys. Rev. C",
  "categories": [
    "nucl-th"
  ],
  "abstract": "The occurrence of a pygmy dipole resonance in proton rich Ar-32 and Ar-34 is studied using the unitary correlator operator method interaction Vucom, based on Argonne V18. Predictions from the random phase approximation (RPA) and the shell model in a no-core basis are compared. It is found that the inclusion of configuration mixing up to two-particle--two-holes broadens the pygmy strength slightly and reduces sensibly its strength, as compared to the RPA predictions. For Ar-32 a clear peak associated with a pygmy resonance is found. For Ar-34, the pygmy states are obtained close to the giant dipole resonance and mix with it.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2007-12-19T18:55:33.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "24.10.Cn",
      "21.60.Cs",
      "21.60.Ev",
      "24.30.Gd",
      "21.10.Gv"
    ],
    "keywords": [
      "random phase approximation",
      "proton rich argon",
      "pygmy dipole response",
      "correlator operator method interaction vucom",
      "unitary correlator operator method interaction"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 776558,
      "adsabs": "2007arXiv0712.3254B"
    }
  }
}