{
  "annotation_id": "7f269381-e5af-42c2-9a2d-0355f0531932",
  "date_created": "2026-03-02T18:00:08.427000Z",
  "date_modified": "2026-03-02T18:00:08.427000Z",
  "file_hash": "b15404211805911143aa0fd07045373f10b5a833eebf7c1a7512e57871b22ea7",
  "private": false,
  "record": {
    "abstract": "We present a new approach to the construction of effective interactions\nsuitable for many-body calculations by means of the no-core shell model (NCSM).\nWe consider an effective field theory (EFT) with only nucleon fields directly\nin the NCSM model spaces. In leading order, we obtain the strengths of the\nthree contact terms from the condition that in each model space the\nexperimental ground-state energies of 2H, 3H and 4He be exactly reproduced. The\nfirst (0^+;0) excited state of 4He and the ground state of 6Li are then\nobtained by means of NCSM calculations in several spaces and frequencies. After\nwe remove the harmonic-oscillator frequency dependence, we predict for 4He an\nenergy level for the first (0^+;0) excited state in remarkable agreement with\nthe experimental value. The corresponding 6Li binding energy is about 70% of\nthe experimental value, consistent with the expansion parameter of the EFT.",
    "arxiv_id": "nucl-th/0609023",
    "authors": [
      "I. Stetcu",
      "B. R. Barrett",
      "U. van Kolck"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/j.physletb.2007.07.065",
    "journal_ref": "Phys.Lett.B653:358-362,2007",
    "title": "No-core shell model in an effective-field-theory framework",
    "url": "https://arxiv.org/abs/nucl-th/0609023"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "cfd71a7d-72d7-4814-a338-e6bc1ee6d0eb",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}