{
  "annotation_id": "2fbcaa4d-8dea-4855-90a7-2259bbc4b679",
  "date_created": "2026-03-02T18:00:14.818000Z",
  "date_modified": "2026-03-02T18:00:14.818000Z",
  "file_hash": "ca9ea6403bc3c5b134b468193356ca5ce187f40cbeee77b29e67012a3166a36f",
  "private": false,
  "record": {
    "abstract": "It is shown that the norm corrections, introduced to avoid the violation of\nthe constraints on the depletion of the hole states in the standard\nperturbative 2p2h approach, leads in nuclear matter to a dependence of the\nmomentum distribution with the total nucleon number. This unphysical behavior,\nwhich in turn makes the depletion to be non-extensive, arises from\ncontributions of disconnected diagrams contained in the norm. It is found that\nthe extensivity is again recovered when the 4p4h excitations in the ground\nstate are included, and a reasonable value for the total number of nucleons\npromoted above the Fermi level is obtained.",
    "arxiv_id": "nucl-th/9512042",
    "authors": [
      "A. Mariano",
      "F. Krmpotic",
      "A. F. R de Toledo Piza"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.53.1664",
    "journal_ref": "Phys.Rev.C53:1664-1669,1996",
    "title": "Momentum Distribution in Nuclear matter within a Perturbation   Approximation",
    "url": "https://arxiv.org/abs/nucl-th/9512042"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c0a7a0fa-37f4-47d4-b8ab-80b8fb935886",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}