{
  "annotation_id": "eb9b4ef7-e68d-4fb1-836e-c31f5172f5fb",
  "date_created": "2026-03-02T18:00:22.368000Z",
  "date_modified": "2026-03-02T18:00:22.368000Z",
  "file_hash": "04b8516e16bbaaa3ae55c5d5adae37a5b8344bf8838a145effe72f3ef55c8477",
  "private": false,
  "record": {
    "abstract": "Recently, we proposed an exact method for direct calculation of the Jost\nfunction for central potentials (which may have Coulombic tails) and the Jost\nmatrix for non-central short range potentials. This method works for all real\nor complex momenta of physical interest, including the spectral points\ncorresponding to bound and Siegert states. In this work we extend it for\npotentials which couple channels with different thresholds. The proposed method\nis based on simple differential equations of the first order, which can be\neasily solved numerically. Thus, the spectrum generated by any given potential\ncan be thoroughly investigated. At the same time the physical wave function can\nbe obtained having the correct asymptotic behaviour.",
    "arxiv_id": "nucl-th/9808034",
    "authors": [
      "S. A. Rakityansky",
      "S. A. Sofianos"
    ],
    "categories": [
      "nucl-th",
      "quant-ph"
    ],
    "journal_ref": "Few Body Syst.Suppl.10:93-96,1999",
    "title": "Jost function for coupled channels",
    "url": "https://arxiv.org/abs/nucl-th/9808034"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a0ea75dd-90cf-4ec8-91c9-285c557d383c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}