{
  "annotation_id": "1a85f0bc-b519-4681-b44f-907c9d6b9553",
  "date_created": "2026-03-02T18:00:25.305000Z",
  "date_modified": "2026-03-02T18:00:25.305000Z",
  "file_hash": "9dc788fac3e3ba5e4c25b4f608329b8608666e7b0b3329237baddd290d131392",
  "private": false,
  "record": {
    "abstract": "The positioning of a bubble inside a many fermion system does not affect the\nvolume, surface or curvature terms in the liquid drop expansion of the total\nenergy. Besides possible Coulomb effects, the only other contribution to the\nground state energy of such a system arises from shell effects. We show that\nthe potential energy surface is a rather shallow function of the displacement\nof the bubble from the center and in most cases the preferential position of a\nbubble is off center. Systems with bubbles are expected to have bands of\nextremely low lying collective states, corresponding to various bubble\ndisplacements.",
    "arxiv_id": "nucl-th/9902011",
    "authors": [
      "Yongle Yu",
      "Aurel Bulgac",
      "Piotr Magierski"
    ],
    "categories": [
      "nucl-th",
      "physics.atm-clus"
    ],
    "doi": "10.1103/PhysRevLett.84.412",
    "journal_ref": "Phys.Rev.Lett. 84 (2000) 412-415",
    "title": "Shell correction energy for bubble nuclei",
    "url": "https://arxiv.org/abs/nucl-th/9902011"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b95c1ed9-e90d-45a7-8860-ffb4b8273295",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}