{
  "annotation_id": "37f3ab26-68ef-49f8-9f25-a5382a6dc195",
  "date_created": "2026-03-02T18:00:39.049000Z",
  "date_modified": "2026-03-02T18:00:39.049000Z",
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  "record": {
    "abstract": "Several issues relating to oppositely directed phase velocity and power flow\nare reviewed. A necessary condition for the occurrence of this phenomenon in\nisotropic dielectric-magnetic mediums is presented. Ramifications for\naberration-free lenses, homogenization approaches, and complex mediums are\ndiscussed.",
    "arxiv_id": "physics/0205027",
    "authors": [
      "Akhlesh Lakhtakia",
      "Martin W. McCall",
      "Werner S. Weiglhofer",
      "Jaline Gerardin",
      "Jianwei Wang"
    ],
    "categories": [
      "physics.class-ph",
      "cond-mat.other",
      "physics.gen-ph",
      "physics.optics"
    ],
    "doi": "10.1117/12.473003",
    "journal_ref": "Arch. Elektr. Ueber., Vol. 56, pp. 407-410 (2002).",
    "title": "On mediums with negative phase velocity: a brief overview",
    "url": "https://arxiv.org/abs/physics/0205027"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c72bd0bf-425c-4dc8-a754-2cefab4d21d8",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}