{
  "annotation_id": "8b4b19db-6b9e-46ed-ba21-5052e7a60744",
  "date_created": "2026-03-02T18:01:42.141000Z",
  "date_modified": "2026-03-02T18:01:42.141000Z",
  "file_hash": "aa3a3970d8113849f16fd9c5154c32c23a3bb9059c0e90ab53713f18be176d1a",
  "private": false,
  "record": {
    "abstract": "Based on experimental evidences supporting the hypothesis that neutrinos\nmight be spacelike particles, a new Dirac-type equation is proposed and a\nspin-1/2 spacelike quantum theory is developed. The new Dirac-type equation\nprovides a solution for the puzzle of negative mass-square of neutrinos. This\nequation can be written in two spinor equations coupled together via nonzero\nmass while respecting maximum parity violation, and it reduces to one Weyl\nequation in the massless limit. Some peculiar features of spacelike neutrino\nare discussed in this theoretical framework.",
    "arxiv_id": "quant-ph/0103124",
    "authors": [
      "Tsao Chang"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "A Dirac-type equation for spacelike neutrinos",
    "url": "https://arxiv.org/abs/quant-ph/0103124"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ca5b564d-d1af-4dec-8777-b1eb76e2d67f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}