{
  "annotation_id": "8843c947-36b5-490b-b944-8c63f5effc2b",
  "date_created": "2026-03-02T18:02:44.848000Z",
  "date_modified": "2026-03-02T18:02:44.848000Z",
  "file_hash": "14e1aec5f8e18e136c352dd6ebd2b06902a14ebec8fd944240bd3bb3ba1d0ad9",
  "private": false,
  "record": {
    "abstract": "Within the decoherence theory we investigate the physical background of the\ncondition of the separability (diagonalizability in noncorrelated basis) of the\ninteraction Hamiltonian of the composite system, \"system plus environment\". It\nproves that the condition of the separability may serve as a criterion for\ndefining \"system\", but so that \"system\" cannot be defined unless it is\nsimultaneously defined with its \"environment\". When extended to a set of the\nmutually interacting composite systems, this result implies that the\nseparability conditions of the local interactions are mutually tied. The task\nof defining \"system\" (and \"environment\") via investigating the separability of\nthe Hamiltonian is a sort of the inverse task of the decoherence theory. A\nsimple example of doing the task is given.",
    "arxiv_id": "quant-ph/9903037",
    "authors": [
      "M. Dugic"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "Int.J.Theor.Phys. 45 (2006) 2215-2225",
    "title": "What is \"system\" : the arguments from the decoherence theory",
    "url": "https://arxiv.org/abs/quant-ph/9903037"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f1da4e2c-e3a8-41fc-ad57-f7fd51b517fa",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}