{
  "annotation_id": "c388074d-d243-47ce-898d-6718b187296a",
  "date_created": "2026-03-02T18:00:11.917000Z",
  "date_modified": "2026-03-02T18:00:11.917000Z",
  "file_hash": "53875cc3126fb946be4d4c6dd3a82f99171c10dbcb7c5a3acf6e514a2c1d0472",
  "private": false,
  "record": {
    "abstract": "We investigate the crossover from Bardeen-Cooper-Schrieffer (BCS) pairing to\na Bose-Einstein condensate (BEC) in a relativistic superfluid within a\nboson-fermion model. The model includes, besides the fermions, separate bosonic\ndegrees of freedom, accounting for the bosonic nature of the Cooper pairs. The\ncrossover is realized by tuning the difference between the boson mass and boson\nchemical potential as a free parameter. The model yields populations of\ncondensed and uncondensed bosons as well as gapped and ungapped fermions\nthroughout the crossover region for arbitrary temperatures. Moreover, we\nobserve the appearance of antiparticles for sufficiently large values of the\ncrossover parameter. As an application, we study pairing of fermions with\nimbalanced populations. The model can potentially be applied to color\nsuperconductivity in dense quark matter at strong couplings.",
    "arxiv_id": "nucl-th/0611097",
    "authors": [
      "Jian Deng",
      "Andreas Schmitt",
      "Qun Wang"
    ],
    "categories": [
      "nucl-th",
      "cond-mat.supr-con",
      "hep-ph"
    ],
    "doi": "10.1103/PhysRevD.76.034013",
    "journal_ref": "Phys.Rev.D76:034013,2007",
    "title": "Relativistic BCS-BEC crossover in a boson-fermion model",
    "url": "https://arxiv.org/abs/nucl-th/0611097"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7142ce7b-aacf-4d1f-9513-c629e319279b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}