{
  "annotation_id": "da926902-13f5-450e-8114-ac54d8a1a7fa",
  "date_created": "2026-03-02T18:00:08.371000Z",
  "date_modified": "2026-03-02T18:00:08.371000Z",
  "file_hash": "b844b6ed4269385f2b415093f2b3c3901451f246b45c9c5b9a257b45bf9a5de4",
  "private": false,
  "record": {
    "abstract": "The density, spin and isospin correlation functions in nuclear matter with a\nneutron-proton ($np$) condensate are calculated to study the possible\nsignatures of the BEC-BCS crossover in the low-density region. It is shown that\nthe criterion of the crossover (Phys. Rev. Lett. {\\bf 95}, 090402 (2005)),\nconsisting in the change of the sign of the density correlation function at low\nmomentum transfer, fails to describe correctly the density-driven BEC-BCS\ntransition at finite isospin asymmetry or finite temperature. As an unambiguous\nsignature of the BEC-BCS transition, there can be used the presence (BCS\nregime) or absence (BEC regime) of the singularity in the momentum distribution\nof the quasiparticle density of states.",
    "arxiv_id": "nucl-th/0604028",
    "authors": [
      "A. A. Isayev"
    ],
    "categories": [
      "nucl-th",
      "cond-mat.other",
      "hep-ph"
    ],
    "doi": "10.1134/1.2161279",
    "journal_ref": "JETP Lett.82:551-556,2005; Pisma Zh.Eksp.Teor.Fiz.82:627-632,2005",
    "title": "Two-body correlation functions in nuclear matter with $np$ condensate",
    "url": "https://arxiv.org/abs/nucl-th/0604028"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6297a455-757b-4dd0-a1c7-4c6277c24d28",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}