{
  "annotation_id": "bf81f77b-1795-42a4-89a1-ad43f8f76ae0",
  "date_created": "2026-03-02T18:00:25.270000Z",
  "date_modified": "2026-03-02T18:00:25.270000Z",
  "file_hash": "fe05b8aad40399dd35e0fab29534d3f78bc2308c0fcf0c3c4840555ffe2eaed0",
  "private": false,
  "record": {
    "abstract": "We use equations for Faddeev amplitudes to solve the shell-model problem for\nfour nucleons in the model space that includes up to 14 hbar Omega\nharmonic-oscillator excitations above the unperturbed ground state. Two- and\nthree-body effective interactions derived from the Reid93 and Argonne V8\u0027\nnucleon-nucleon potentials are used in the calculations. Binding energies,\nexcitations energies, point-nucleon radii and electromagnetic and strangeness\ncharge form factors for 4He are studied. The structure of the Faddeev-like\nequations is discussed and a formula for matrix elements of the permutation\noperators in a harmonic-oscillator basis is given. The dependence on\nharmonic-oscillator excitations allowed in the model space and on the\nharmonic-oscillator frequency is investigated. It is demonstrated that the use\nof the three-body effective interactions improves the convergence of the\nresults.",
    "arxiv_id": "nucl-th/9812062",
    "authors": [
      "P. Navratil",
      "B. R. Barrett"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.59.1906",
    "journal_ref": "Phys.Rev. C59 (1999) 1906-1918",
    "title": "Four-nucleon shell-model calculations in a Faddeev-like approach",
    "url": "https://arxiv.org/abs/nucl-th/9812062"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d2c3d4eb-85b6-49a0-b343-6441ceb7acd2",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}