{
  "annotation_id": "5097824a-dfab-4b58-95c1-825b97f71ede",
  "date_created": "2026-03-02T18:01:03.398000Z",
  "date_modified": "2026-03-02T18:01:03.398000Z",
  "file_hash": "ed6509260c10a5990a71546f745f2b8ec79570c734d5d2bd5be274da785b9cda",
  "private": false,
  "record": {
    "abstract": "Based on boundary condition and dispersion relation, the superluminal group\nvelocity in an anisotropic metamaterial (AMM) is investigated. The superluminal\npropagation is induced by the hyperbolic dispersion relation associated with\nthe AMM. It is shown that a modulated Gaussian beam exhibits a superluminal\ngroup velocity which depends on the choice of incident angles and optical axis\nangles. The superluminal propagation does not violate the theory of special\nrelativity because the group velocity is the velocity of the peak of the\nlocalized wave packet which does not carry information. It is proposed that a\ntriglycine sulfate (TGS) crystal can be designed and the superluminal group\nvelocity can be measured experimentally.",
    "arxiv_id": "physics/0601035",
    "authors": [
      "Hailu Luo",
      "Wei Hu",
      "Weixing Shu",
      "Fei Li",
      "Zhongzhou Ren"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1209/epl/i2006-10046-4",
    "journal_ref": "Europhysics Letters 74, 1081 (2006).",
    "title": "Superluminal group velocity in an anisotropic metamaterial",
    "url": "https://arxiv.org/abs/physics/0601035"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b5d00677-24f1-4168-b165-cbe82f16ffa0",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}