{
  "annotation_id": "ddbc1e49-1bac-4588-b524-9fbdb7918813",
  "date_created": "2026-03-02T18:00:07.620000Z",
  "date_modified": "2026-03-02T18:00:07.620000Z",
  "file_hash": "f6f023ce33df25d939868ec647c709d9c5e5ea42331a42863005d164e8162d84",
  "private": false,
  "record": {
    "abstract": "The atom-dimer and dimer-dimer scattering lengths are analytically calculated\nin an expansion around four spatial dimensions for fermions with a large 2-body\nscattering length \u0027a\u0027. We find the atom-dimer scattering length a_ad/a =\n4/3-2/9 epsilon and the dimer-dimer scattering length a_dd/a = epsilon -0.344\nepsilon^2, where epsilon = 4-d and d is the number of spatial dimensions. These\nratios a_ad/a = 1.11 and a_dd/a = 0.656 at epsilon = 1 are to be compared with\nthe non-perturbatively calculated numerical results 1.18 and 0.6 respectively.\nThe neutron-deuteron scattering length in the quartet channel a_nD = 4.78 fm is\nin reasonable agreement with the experimental value 6.35 fm, considering 2-body\neffective range corrections r_0/a = 0.4 were excluded. The deuteron-deuteron\nscattering length a_DD = 3.15 fm in the spin-2 channel.",
    "arxiv_id": "nucl-th/0605074",
    "authors": [
      "Gautam Rupak"
    ],
    "categories": [
      "nucl-th",
      "cond-mat.other",
      "hep-ph"
    ],
    "title": "Dimer scattering in the epsilon expansion",
    "url": "https://arxiv.org/abs/nucl-th/0605074"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4c7efd00-2bc6-46be-a46a-d4b5d340bb34",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}