{
  "abstract": "We calculate low-energy deuteron-deuteron scattering in the spin-quintet $^{5}S_2$ channel using nuclear lattice effective field theory. The calculation combines chiral interactions at next-to-next-to-next-to-leading order, implemented through wavefunction matching, with the adiabatic projection method. Because the radial cluster basis develops small norm-matrix eigenvalues at large Euclidean projection time, we investigate two stabilization procedures: Tikhonov regularization and projection onto well-resolved norm eigenmodes. The two procedures yield consistent Coulomb-subtracted phase shifts within their statistical and numerical uncertainties. A Coulomb-modified effective-range analysis gives ${}^5a_{dd} = (11.99 \\pm 0.22)$ fm and ${}^5r_{dd} = (3.44 \\pm 0.79)$ fm. The phase shifts are more negative, and the scattering length is substantially larger than in previous calculations, corresponding to a stronger effective repulsion in the $^{5}S_2$ channel. These results provide a first nuclear-lattice benchmark for deuteron-deuteron scattering and establish a starting point for future coupled-channel calculations of the deuteron-induced reactions relevant to big-bang nucleosynthesis.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2607.00681",
  "author_total": 4,
  "authors": [
    {
      "name": "Helen Meyer"
    },
    {
      "name": "Serdar Elhatisari"
    },
    {
      "name": "Fabian Hildenbrand"
    },
    {
      "name": "Ulf-G. Meißner"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/c1j9zqbp49ytc.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2607.00681",
  "fulltext_url": null,
  "id": "c1j9zqbp49ytc",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2607.00681",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-lat"
    ],
    [
      "arxiv",
      "nucl-th"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2607.00681",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/c1j9zqbp49ytc.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:48Z",
      "native_id": "2607.00681",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2607.00681"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-lat",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Elastic deuteron-deuteron scattering in the ${}^5S_2$ channel within Nuclear Lattice Effective Field Theory",
  "title_text": "Elastic deuteron-deuteron scattering in the ^5S_2 channel within Nuclear Lattice Effective Field Theory",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:48Z",
  "url": "https://research.draconitic.com/paper/c1j9zqbp49ytc",
  "venue": "arXiv",
  "versions": []
}