{
  "annotation_id": "806a5704-1193-4126-b102-f1895a7dc123",
  "date_created": "2026-03-02T18:00:52.898000Z",
  "date_modified": "2026-03-02T18:00:52.898000Z",
  "file_hash": "bdabf924cf5298ceee1c3da36268595c8e8076d32f4340ff534ea82743e290e3",
  "private": false,
  "record": {
    "abstract": "We describe a physical situation where the time integral of the electric\nfield of an electromagnetic wave packet is not zero. More specifically, the\nnon-oscillating component of the Fourier spectrum, i.e. the component resulting\nfrom the Fourier transform of the electric field evaluated at $\\omega=0$, can\nbe associated with the area under a locally unipolar electromagnetic pulse that\ntravels in free space at the speed of light.",
    "arxiv_id": "physics/0412038",
    "authors": [
      "C. Varin",
      "M. Pich\u00e9"
    ],
    "categories": [
      "physics.class-ph"
    ],
    "title": "Unipolar components travelling at the speed of light in vacuo",
    "url": "https://arxiv.org/abs/physics/0412038"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e28edab0-5c59-4f0a-985a-312cbc041f4e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}