{
  "annotation_id": "e4170bee-8b64-43c9-a792-d3bce7512847",
  "date_created": "2026-03-02T18:02:31.250000Z",
  "date_modified": "2026-03-02T18:02:31.250000Z",
  "file_hash": "5a56b8d4c0db6a66487e442da6086a4a5d4688201054ed523d514e7d678e80af",
  "private": false,
  "record": {
    "abstract": "The dynamics of the population imbalance of bosons in a double-well potential\nis investigated from the point of view of many-body quantum mechanics in the\nframework of the two-mode model. For small initial population imbalances,\ncoherent superpositions of almost equally spaced energy eigenstates lead to\nJosephson oscillations. The suppression of tunneling at population imbalance\nbeyond a critical value is related to a high concentration of initial state\npopulation in the region of the energy spectrum with quasi-degenerate doublets\nresulting in imbalance oscillations with a very small amplitude. For\nunaccessible long times, however, the system recovers the regime of Josephson\noscillations.",
    "arxiv_id": "quant-ph/0608222",
    "authors": [
      "A. N. Salgueiro",
      "A. F. R. de Toledo Piza",
      "G. B. Lemos",
      "R. Drumond",
      "M. C. Nemes",
      "M. Weidemueller"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1140/epjd/e2007-00224-4",
    "journal_ref": "Eur. Phys. J. D 44 3 (2007) 537-540",
    "title": "Quantum dynamics of bosons in a double-well potential: Josephson   oscillations, self-trapping and ultralong tunneling times",
    "url": "https://arxiv.org/abs/quant-ph/0608222"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "929c0967-9d4c-4930-b0e3-b968bd0cb682",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}