{
  "annotation_id": "56e29812-dafe-4c14-bf8c-d0c7df557e23",
  "date_created": "2026-03-02T18:02:13.081000Z",
  "date_modified": "2026-03-02T18:02:13.081000Z",
  "file_hash": "a38ed07ea73e462673011d102347b7f2889c2efc3ddf7e539d05030bf2821dbf",
  "private": false,
  "record": {
    "abstract": "A new method is proposed for the calculation of full density matrix and\nthermodynamic functions of a many-boson system. Explicit expressions are\nobtained in the pair correlations approximation for an arbitrary temperature.\nThe theory is self-consistent in the sence that the calculated properties at\nlow temperatures coincide with that of Bogoliubov theory and in the\nhigh-temperature limit lead to the results for classical non-ideal gas in the\nrandom phase approximation. The phase transition is also revealed as a\nconcequence of Bose-Einstein condensation deformed by interatomic interactions.\nAll the final formulae are written solely via the liquid structure factor taken\nas a source information instead of the interatomic potential and, therefore,\ninterconnect only observable quantities. This gives also a possibility to study\nsuch a strongly non-ideal system as liquid He-4.",
    "arxiv_id": "quant-ph/0502127",
    "authors": [
      "I. O. Vakarchuk"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "A self-consistent theory of liquid He-4",
    "url": "https://arxiv.org/abs/quant-ph/0502127"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4c893265-89ee-4e29-b981-275d51f4d7d4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}