{
  "abstract": "The $^{12}\\mathrm{C}+{}^{12}\\mathrm{C}$ fusion reaction is central to stellar carbon burning, yet its cross section at astrophysical energies remains uncertain and theoretical extrapolations depend sensitively on the adopted nucleus-nucleus interaction. We systematically assess 24 macroscopic interactions within a common one-dimensional fusion framework and find that their relative agreement with experimental data depends strongly on both the statistical measure and energy interval considered, with no single interaction providing a uniformly superior description across all criteria. A common phenomenological short-range repulsive modification is then applied to all interactions without refitting their underlying parametrizations. Although the external fusion barrier remains essentially unchanged, the modification substantially reorganizes the inner-potential structure and produces strongly model-dependent changes in agreement with experiment. Detailed analysis of five representative interactions shows that the resulting low-energy suppression propagates into the thermonuclear reaction rates, but does not produce the conventional logarithmic-slope signature of fusion hindrance over the calculated energy range. These results demonstrate that additional short-range repulsion does not provide a universal improvement of macroscopic fusion potentials and that the reliability of extrapolations toward stellar carbon-burning energies remains sensitive to both the choice of interaction and its short-range behavior.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.25996",
  "author_total": 2,
  "authors": [
    {
      "name": "Azni Abdul Aziz"
    },
    {
      "name": "Norhasliza Yusof"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e20mct7rtfzss.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.25996",
  "fulltext_url": null,
  "id": "e20mct7rtfzss",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.25996",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "nucl-th"
    ],
    [
      "openalex",
      "3106|Nuclear physics research studies"
    ]
  ],
  "openalex": "W7214109413",
  "pdf_url": "https://arxiv.org/pdf/2609.25996",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e20mct7rtfzss.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:39Z",
      "native_id": "2609.25996",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.25996"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Systematic study of macroscopic interaction models and short-range effects in $^{12}\\mathrm{C}+{}^{12}\\mathrm{C}$ fusion",
  "title_text": "Systematic study of macroscopic interaction models and short-range effects in ^12C+^12C fusion",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:39Z",
  "url": "https://research.draconitic.com/paper/e20mct7rtfzss",
  "venue": "arXiv",
  "versions": []
}