{
  "annotation_id": "f338a947-a274-448f-9344-dccd2c288352",
  "date_created": "2026-03-02T18:00:01.306000Z",
  "date_modified": "2026-03-02T18:00:01.306000Z",
  "file_hash": "4e01558b1748ab0aa5cb3b7968675fd454bb799d98036eba0b6482c4aa74afdd",
  "private": false,
  "record": {
    "abstract": "The low-lying level structures of $^{26}{\\rm Ne}$, $^{28}{\\rm Ne}$ and\n$^{30}{\\rm Ne}$ which are related to the breaking of the N=20 shell closure\nhave been studied by the framework of the deformed-basis antisymmetrized\nmolecular dynamics plus generator coordinate method using Gogny D1S force. The\nproperties of the many-particle and many-hole states are discussed as well as\nthat of the ground band. We predict that the negative-parity states in which\nneutrons are promoted into $pf$-orbit from $sd$ orbit have the small excitation\nenergy in the cases of $^{28}{\\rm Ne}$ and $^{30}{\\rm Ne}$ which, we regard, is\na typical phenomena accompanying the breaking of N=20 shell closure. It is also\nfound that the neutron $4p4h$ structure of $^{30}{\\rm Ne}$ appears in low\nexcitation energy which contains $\\alpha + ^{16}{\\rm O}$ correlations.",
    "arxiv_id": "nucl-th/0404032",
    "authors": [
      "Masaaki Kimura",
      "Hisashi Horiuchi"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1143/PTP.111.841",
    "journal_ref": "Prog.Theor.Phys. 111 (2004) 841-855",
    "title": "Many-Particle and Many-Hole States in Neutron-Rich Ne Isotopes Related   to Broken N=20 Shell Closure",
    "url": "https://arxiv.org/abs/nucl-th/0404032"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5403ce71-f984-4130-a963-927ef5669e46",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}