{
  "annotation_id": "dbe59a5d-e344-4b6b-98d0-4aa3cebb4dba",
  "date_created": "2026-03-02T18:01:20.935000Z",
  "date_modified": "2026-03-02T18:01:20.935000Z",
  "file_hash": "bfa4460bdacfcaff2a2fbb781c0c9bcc7b74c4d0189dd60ef9f25c8ddfea4fa1",
  "private": false,
  "record": {
    "abstract": "The group-velocity of evanescent waves (in undersized waveguides, for\ninstance) was theoretically predicted, and has been experimentally verified, to\nbe Superluminal (v_g \u003e c). By contrast, it is known that the precursor speed in\nvacuum cannot be larger than c. In this paper, by computer simulations based on\nMaxwell equations only, we show the existence of both phenomena. In other\nwords, we verify the actual possibility of Superluminal group velocities,\nwithout violating the so-called (naive) Einstein causality. (Subject classes:\nGeneral physics, Classical physics, Optics, Special Relativity; PACS nos.:\n73.40Gk, 03.80+z, 03.65Bz; Keywords: evanescent waves; tunnelling photons;\nHartman effect; group velocity; Superluminal waves; precursors; transient\nwaves; front velocity; Maxwell equations; electromagnetic waves; computer\nsimulations; Special Relativity; Extended Relativity).",
    "arxiv_id": "physics/9811001",
    "authors": [
      "A. Pablo",
      "L. Barbero",
      "Hugo E. Hernandez F.",
      "Erasmo Recami"
    ],
    "categories": [
      "physics.gen-ph"
    ],
    "doi": "10.1103/PhysRevE.62.8628",
    "journal_ref": "Physical Review E62 (2000) 8628-8635",
    "title": "On the propagation speed of evanescent modes",
    "url": "https://arxiv.org/abs/physics/9811001"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "cabbcc4e-e610-4af5-90d3-759d31291703",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}