{
  "annotation_id": "a26cdbfb-a33f-40db-9b17-3b0c8e0bbfbb",
  "date_created": "2026-03-02T18:00:11.221000Z",
  "date_modified": "2026-03-02T18:00:11.221000Z",
  "file_hash": "bfc7618c3f8f342764f7edb302c05baa3e81c3cba080157ce086493c70ea72ee",
  "private": false,
  "record": {
    "abstract": "The low-lying level structure of $^{31}{\\rm Mg}$ has been investigated by the\nantisymmetrized molecular dynamics (AMD) plus generator coordinate method (GCM)\nwith the Gogny D1S force. It is shown that the N=20 magic number is broken and\nthe ground state has the pure neutron $2p3h$ configuration. The coexistence of\nmany particle and many hole states at very low excitation energy is discussed.",
    "arxiv_id": "nucl-th/0702012",
    "authors": [
      "Masaaki Kimura"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.75.041302",
    "journal_ref": "Phys.Rev.C75:041302,2007",
    "title": "The intruder feature of 31Mg and the coexistence of many particle and   many hole states",
    "url": "https://arxiv.org/abs/nucl-th/0702012"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fc9fc3ba-404c-4fa3-b2e1-63357842ced1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}