{
  "annotation_id": "4d2d3d2f-8e50-4168-9672-a5b084e99286",
  "date_created": "2026-03-02T18:00:53.560000Z",
  "date_modified": "2026-03-02T18:00:53.560000Z",
  "file_hash": "18786845859f1bb66be9b206f98ee584d058c1e7a557f1746470f4d4a8241b55",
  "private": false,
  "record": {
    "abstract": "We calculate resonances in three-body systems with attractive Coulomb\npotentials by solving the homogeneous Faddeev-Merkuriev integral equations for\ncomplex energies. The equations are solved by using the Coulomb-Sturmian\nseparable expansion approach. This approach provides an exact treatment of the\nthreshold behavior of the three-body Coulombic systems. We considered the\nnegative positronium ion and, besides locating all the previously know $S$-wave\nresonances, we found a whole bunch of new resonances accumulated just slightly\nabove the two-body thresholds. The way they accumulate indicates that probably\nthere are infinitely many resonances just above the two-body thresholds, and\nthis might be a general property of three-body systems with attractive Coulomb\npotentials.",
    "arxiv_id": "physics/0409149",
    "authors": [
      "Z. Papp",
      "J. Darai",
      "J. Zs. Mezei",
      "Z. T. Hlousek",
      "C-. Y. Hu"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevLett.94.143201",
    "title": "Accumulation of three-body resonances above two-body thresholds",
    "url": "https://arxiv.org/abs/physics/0409149"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6f9fde53-3389-453e-aaa5-3d1a4d8d56dc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}