{
  "annotation_id": "28664fd7-32d1-4894-bc54-bd12a5ad0a9f",
  "date_created": "2026-03-02T18:01:00.420000Z",
  "date_modified": "2026-03-02T18:01:00.420000Z",
  "file_hash": "943238a62ef20b8a7110714bde3e8c30c1c3d9a52d1f05b9e7110d141e619702",
  "private": false,
  "record": {
    "abstract": "Under certain circumstances, the group velocity in a homogenized composite\nmedium (HCM) can exceed the group velocity in its component material phases. We\nexplore this phenomenon for a uniaxial dielectric HCM comprising isotropic\ncomponent material phases distributed as oriented spheroidal particles. The\ntheoretical approach is based upon the Bruggeman homogenization formalism.\nEnhancement in group velocity in the HCM with respect to the component material\nphases is shown to be sensitively dependent upon the shape of the component\nspheroids and their alignment relative to the direction of propagation.",
    "arxiv_id": "physics/0506129",
    "authors": [
      "Tom G. Mackay",
      "Akhlesh Lakhtakia"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1088/1464-4258/7/11/009",
    "journal_ref": "J. Opt. A: Pure Appl. Opt. 7 (2005) 669-674",
    "title": "Anisotropic enhancement of group velocity in a homogenized dielectric   composite medium",
    "url": "https://arxiv.org/abs/physics/0506129"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "70b1f099-f507-40bb-b678-a4e976a93595",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}