{
  "annotation_id": "fa1a5090-83dc-4e4b-aebb-492dc95c41ee",
  "date_created": "2026-03-02T18:00:53.736000Z",
  "date_modified": "2026-03-02T18:00:53.736000Z",
  "file_hash": "1644c9859f91cc1f0729e303a4d4c520f7569c09d365e5e2f66d52439610f194",
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  "record": {
    "abstract": "The propagation of plane waves in an isotropic chiral medium (ICM) is\ninvestigated. Simple conditions are derived--in terms of the constitutive\nparameters of the ICM--for the phase velocity to be directed opposite to the\ndirection of power flow. It is demonstrated that phase velocity and power flow\nmay be oppositely directed provided that the magnetoelectric coupling is\nsufficiently strong.",
    "arxiv_id": "physics/0412131",
    "authors": [
      "Tom G. Mackay"
    ],
    "categories": [
      "physics.optics"
    ],
    "journal_ref": "Microwave Opt. Technol. Lett. 45 (2005), 120-121",
    "title": "Plane waves with negative phase velocity in isotropic chiral mediums",
    "url": "https://arxiv.org/abs/physics/0412131"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2033343a-d1e3-4b6c-85b8-155e1e132918",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}