{
  "annotation_id": "b1ced25d-6eb8-4561-83f5-3e4870e81c4d",
  "date_created": "2026-03-02T18:00:00.891000Z",
  "date_modified": "2026-03-02T18:00:00.891000Z",
  "file_hash": "43927639f46cfa8277928ef65583c2c66eb9c70a1297a0254a7c68008e326925",
  "private": false,
  "record": {
    "abstract": "Many-particle many-hole states near the magic number 20 have been\ninvestigated in the relativistic mean field formalism using the fixed\nconfiguration method. Neutron particle-hole states in neutron-rich nuclei with\n$N\\sim 20$, {\\em i.e.} $^{30,32,34}$Mg,and $^{28,30}$Ne are studied to find out\nthe ground state configuration. The ground state of $^{32}$Ne,Mg as well as\npossibly $^{34}$Mg comes out actually as particle-hole states. Proton-neutron\nexcitation across the shell gap at 20 in nuclei with $N=Z$, {\\em i.e.}\n$^{32}$S, $^{36}$Ar, $^{40}$Ca and $^{44}$Ti is investigated as possible\norigins of superdeformed configuration. Observed superdeformed bands in\n$^{36}$Ar and $^{40}$Ca can be described as many-particle many-hole states.",
    "arxiv_id": "nucl-th/0404043",
    "authors": [
      "Samit Bhowal",
      "Sankha Das",
      "G. Gangopadhyay"
    ],
    "categories": [
      "nucl-th"
    ],
    "title": "Many-particle many-hole states near the magic number 20: deformed and   superdeformed states",
    "url": "https://arxiv.org/abs/nucl-th/0404043"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "04914e5a-284b-4d61-86f2-20c96aa75c23",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}