{
  "annotation_id": "b224afec-dca4-44e7-9614-858df0d4df61",
  "date_created": "2026-03-02T18:00:46.797000Z",
  "date_modified": "2026-03-02T18:00:46.797000Z",
  "file_hash": "f59e5c0d84ee9309fb8124134eeb036b9795c2204d42570710c8db8097632b3b",
  "private": false,
  "record": {
    "abstract": "The optical refractive index of a moving regular medium is calculated by\nusing the Lorentz transformation in this note. It is shown that in some\nvelocity region of medium moving relative to the initial frame K, the moving\nmedium may possess a negative index of refraction measured by the observer\nfixed at the frame of reference K.",
    "arxiv_id": "physics/0312064",
    "authors": [
      "Jian Qi Shen"
    ],
    "categories": [
      "physics.class-ph",
      "physics.gen-ph"
    ],
    "title": "Negative optical refractive index resulting from a moving regular medium",
    "url": "https://arxiv.org/abs/physics/0312064"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0f2998f3-fa51-4bbf-bfa2-e5f2bd50238b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}