{
  "annotation_id": "a2327883-ef79-447e-91cf-7215a27ae0da",
  "date_created": "2026-03-02T18:00:11.986000Z",
  "date_modified": "2026-03-02T18:00:11.986000Z",
  "file_hash": "dbc31172b736908a8f02d7eab8131f55942f9433c465f90990e7bf3e8e58c476",
  "private": false,
  "record": {
    "abstract": "The two-fermion bound system is an attractive subject of atomic and\nsub-atomic physics. Despite these systems are rather simple the study of\ntwo-particle bound states is challenging and still remains a source of progress\nin quantum theory. Here we present a new method of solving the Bethe Salpeter\nequations for the bound states of spinor particles by using the expansion of\nthe vertex functions over the complete set of four-dimensional hyperspherical\nharmonics. Within this method the BS equation is treated in a ladder\napproximation for the cases of scalar, pseudoscalar and vector meson exchanges\nwith corresponding form factors. This method is shown to be effective and\nstable.",
    "arxiv_id": "nucl-th/0611012",
    "authors": [
      "S. M. Dorkin",
      "S. S. Semikh",
      "M. Beyer",
      "L. P. Kaptari"
    ],
    "categories": [
      "nucl-th"
    ],
    "title": "Peculiarities in the Structure of Two-Particle States within the   Bethe-Salpeter Approach",
    "url": "https://arxiv.org/abs/nucl-th/0611012"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4c4bef11-c30f-4ad9-a1e8-5fb63f29b8c9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}