{
  "annotation_id": "bf45ff04-9b4b-46af-9ab5-29b26c875345",
  "date_created": "2026-03-02T18:01:21.483000Z",
  "date_modified": "2026-03-02T18:01:21.483000Z",
  "file_hash": "2c15a15d2ac2e7135ea3f586ce261588e812424068e74d8920b6aaaa783da44b",
  "private": false,
  "record": {
    "abstract": "Medium modification of scattering properties in interacting Bose systems are\nconsidered by solving the Bethe-Salpeter equation. An equation of state for the\nnormal phase (generalized Beth-Uhlenbeck formula) is given using the in-medium\nphase shifts to include two-particle correlations. Conclusions are drawn for\nsystems of bosonic atoms with repulsive interaction such as sodium $^{23}$Na\nand rubidium $^{87}$Rb. It is shown that the in-medium scattering length and\nthe absolute value of the in-medium scattering phase shift for low scattering\nenergies increase with density.",
    "arxiv_id": "physics/9802052",
    "authors": [
      "H. Stein",
      "K. Morawetz",
      "G. R\u00f6pke"
    ],
    "categories": [
      "physics.atom-ph",
      "cond-mat.stat-mech",
      "nucl-th",
      "physics.acc-ph"
    ],
    "doi": "10.1103/PhysRevA.55.1945",
    "journal_ref": "Phys.Rev. A55 (2000) 1945",
    "title": "Medium modification of two-particle scattering in nonideal Bose systems",
    "url": "https://arxiv.org/abs/physics/9802052"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "46e7c6a5-256c-4e52-b36b-3074eebfde7e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}