{
  "id": "nucl-th/0605073",
  "version": "v1",
  "published": "2006-05-27T12:45:05.000Z",
  "updated": "2006-05-27T12:45:05.000Z",
  "title": "Pairing and continuum effects on low-frequency quadrupole vibrations in deformed Mg isotopes close to the neutron drip line",
  "authors": [
    "K. Yoshida",
    "M. Yamagami",
    "K. Matsuyanagi"
  ],
  "comment": "23 pages including 11 figures and 8 tables. Submitted to NPA",
  "journal": "Nucl.Phys. A779 (2006) 99-115",
  "doi": "10.1016/j.nuclphysa.2006.09.003",
  "categories": [
    "nucl-th"
  ],
  "abstract": "Low-frequency quadrupole vibrational modes in deformed $^{36,38,40}$Mg close to the neutron drip line are studied by means of the quasiparticle-random-phase approximation based on the coordinate-space Hartree-Fock-Bogoliubov formalism. Strongly collective $K^{\\pi}=0^{+}$ and $2^{+}$ excitation modes carrying 10-20 Weisskopf units in the intrinsic isoscalar quadrupole transition strengths are obtained at about 3 MeV. There are two reasons for the enhancement of the transition strengths. First, the quasiparticle wave functions generating these modes possess spatially very extended structure. The asymptotic selection rules characterizing the $\\beta$ and $\\gamma$ vibrations in stable deformed nuclei are thus strongly violated. Second, the dynamic pairing effects act strongly to enhance the collectivity of these modes. It is suggested that the lowest $K^{\\pi}=0^{+}$ collective mode is a particularly sensitive indicator of the nature of pairing correlations in deformed nuclei close to the neutron drip line.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2006-05-27T12:45:05.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "21.10.Re",
      "21.60.Ev",
      "21.60.Jz"
    ],
    "keywords": [
      "neutron drip line",
      "deformed mg isotopes close",
      "low-frequency quadrupole vibrations",
      "continuum effects",
      "isoscalar quadrupole transition strengths"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Elsevier",
      "journal": "Nucl. Phys. A"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 23,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 717910
    }
  }
}