{
  "annotation_id": "1ac04222-2bff-4753-a578-78d02b2aab66",
  "date_created": "2026-03-02T18:01:17.821000Z",
  "date_modified": "2026-03-02T18:01:17.821000Z",
  "file_hash": "156f4485abe30fb13da895c0e438660964040d2e0efb9ef1bf0286926890cddd",
  "private": false,
  "record": {
    "abstract": "It is shown that the potential for lepton-antilepton bound states (leptonium)\nis the Fourier transform of the first Born approximation to the QED scattering\namplitude in an 8-component equation, while 16-component equations are\nexcluded. The Fourier transform is exact at all cms energies $-\\infty \u003c E \u003c\n\\infty$; the resulting atomic spectrum is explicitly CPT-invariant.",
    "arxiv_id": "physics/9611004",
    "authors": [
      "R. Haeckl",
      "V. Hund",
      "H. Pilkuhn"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "title": "Eight-component differential equation for leptonium",
    "url": "https://arxiv.org/abs/physics/9611004"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ff369707-e111-4241-b3e9-013a5aeb8c29",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}