{
  "annotation_id": "58cb18d8-ef8d-4502-ba25-498e0efb8cfd",
  "date_created": "2026-03-02T18:01:49.558000Z",
  "date_modified": "2026-03-02T18:01:49.558000Z",
  "file_hash": "e6efcffe0896360c1d3b42762a7f7ff44a15e7ff71533eb27a20b286fb2b3b9b",
  "private": false,
  "record": {
    "abstract": "We introduce photon theory following the same principles as for introduction\nof the quantum theory of a single particle, using a C*-algebraic approach based\non covariance systems. The basic symmetries are additivity of the fields and\nadditivity of test functions. We write down in explicit form a state of this\ncovariance system. It turns out to reproduce the traditional Fock\nrepresentation of the free photon field, with a Lorentz invariant vacuum.\nProperties of smeared-out photons are discussed.",
    "arxiv_id": "quant-ph/0201055",
    "authors": [
      "Maciej Kuna",
      "Jan Naudts"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1142/9789812778024_0018",
    "title": "Covariance approach to the free photon field",
    "url": "https://arxiv.org/abs/quant-ph/0201055"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a4825397-0dcc-4fda-9cda-02d4e3e60935",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}