{
  "annotation_id": "b334793f-763a-4986-b48a-92824b54f4f2",
  "date_created": "2026-03-02T18:00:39.546000Z",
  "date_modified": "2026-03-02T18:00:39.546000Z",
  "file_hash": "9f132eb0af39e906f43e728cd1f25eb93a848dec60241a8775ba42f8e3588043",
  "private": false,
  "record": {
    "abstract": "An electromagnetic trinity comprising vacuum, anti--vacuum, and nihility is\npostulated -- after making use of materials with \"negative permittivity\" and\n\"negative permeability\" -- to illuminate the structure of electromagnetic\ntheory, at least insofar as the relationship of phase velocity with Poynting\nvector is concerned.",
    "arxiv_id": "physics/0112003",
    "authors": [
      "Akhlesh Lakhtakia"
    ],
    "categories": [
      "physics.class-ph"
    ],
    "journal_ref": "Int. J. Infrared Millim. Waves, Vol. 23, pp. 813-818 (2002)",
    "title": "An electromagnetic trinity from \"negative permittivity\" and \"negative   permeability\"",
    "url": "https://arxiv.org/abs/physics/0112003"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1dcb652a-b3f5-4742-a5c1-8f245bf9220d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}