{
  "annotation_id": "8299dee5-7ab0-472f-878e-58810d94a595",
  "date_created": "2026-03-02T18:00:35.381000Z",
  "date_modified": "2026-03-02T18:00:35.381000Z",
  "file_hash": "aa77e90bf903a22357e6c67bcd565c62f6f107535168f36b84f6b7bf3c93247f",
  "private": false,
  "record": {
    "abstract": "Theory for the Rabi and internal Josephson effects in an interacting Bose gas\nin the cold collision regime is presented. By using microscopic transport\nequation for the density matrix the problem is mapped onto a problem of\nprecession of two coupled classical spins. In the absence of an external\nexcitation field our results agree with the theory for the density induced\nfrequency shifts in atomic clocks. In the presence of the external field, the\ninternal Josephson effect takes place in a condensed Bose gas as well as in a\nnon-condensed gas. The crossover from Rabi oscillations to the Josephson\noscillations as a function of interaction strength is studied in detail.",
    "arxiv_id": "physics/0108052",
    "authors": [
      "M. O. Oktel",
      "L. S. Levitov"
    ],
    "categories": [
      "physics.atom-ph",
      "cond-mat"
    ],
    "doi": "10.1103/PhysRevA.65.063604",
    "journal_ref": "Phys. Rev. A 65, 063604 (2002)",
    "title": "Collective dynamics of internal states in a Bose gas",
    "url": "https://arxiv.org/abs/physics/0108052"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "98b0b0b0-8216-4b0c-b622-c378e9e7c004",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}