{
  "annotation_id": "9ad3c055-ed3c-4c5b-bc3c-3abd296b3efe",
  "date_created": "2026-03-02T18:01:15.005000Z",
  "date_modified": "2026-03-02T18:01:15.005000Z",
  "file_hash": "91a52563d24df7ea2a128e4497656eb4163128e0f8d56654a7cc3a87c3568e74",
  "private": false,
  "record": {
    "abstract": "The phase velocity of plane waves propagating in an isotropic chiral medium\ncan be simultaneously positive for left-circularly polarized light and negative\nfor right-circularly polarized light(or vice versa). The constitutive parameter\nregimes supporting this phenomenon are established for nondissipative and\ndissipative mediums. The boundary between positive and negative phase velocity\nis characterized by infinite phase velocity.",
    "arxiv_id": "physics/0610198",
    "authors": [
      "Tom G. Mackay",
      "Akhlesh Lakhtakia"
    ],
    "categories": [
      "physics.optics"
    ],
    "journal_ref": "Microwave Opt Technol Lett 49, 1245-1246 (2007)",
    "title": "Simultaneous negative- and positive-phase-velocity propagation in an   isotropic chiral medium",
    "url": "https://arxiv.org/abs/physics/0610198"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "04b3c4c9-9b1a-4a1e-90f7-23b4a5d208b4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}