{
  "annotation_id": "f57ea4c7-695d-4dad-b38a-85331ef34a71",
  "date_created": "2026-03-02T18:02:05.749000Z",
  "date_modified": "2026-03-02T18:02:05.749000Z",
  "file_hash": "668234645d8736d716b945fb183b84f9ff54b588eb612619f672c2f5f5e5a9e3",
  "private": false,
  "record": {
    "abstract": "Two or more quantum systems are said to be in an entangled or\nnon-factorisable state if their joint (supposedly pure) wave-function is not\nexpressible as a product of individual wave functions but is instead a\nsuperposition of product states. It is only when the systems are in a\nfactorisable state that they can be considered to be separated (in the sense of\nBell). We show that whenever two quantum systems interact with each other, it\nis impossible that all factorisable states remain factorisable during the\ninteraction unless the full Hamiltonian does not couple these systems so to say\nunless they do not really interact. We also present certain conditions under\nwhich particular factorisable states remain factorisable although they\nrepresent a bipartite system whose components mutually interact. We identify\ncertain quasi-classical regimes that satisfy these conditions and show that\nthey correspond to classical, pre-quantum, paradigms associated to the concept\nof particle.",
    "arxiv_id": "quant-ph/0401121",
    "authors": [
      "Thomas Durt"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1515/zna-2004-7-805",
    "title": "Quantum entanglement, interaction, and the classical limit",
    "url": "https://arxiv.org/abs/quant-ph/0401121"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "98bb6918-f0d4-4f51-8254-89c0b83f44aa",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}