{
  "abstract": "We investigate QCD thermodynamics in the intermediate-temperature regime using a gas of confining strings supplemented by excluded volume (EV) corrections. In this description, the discrete hadron resonance spectrum is replaced by an exponentially growing open-string spectrum characterized by a Hagedorn temperature $T_H$, related to the confining string tension. With a common EV parameter shared by mesons and baryons, the model gives a good description of bulk lattice-QCD thermodynamics above the pseudocritical temperature. Among the values considered, $T_H \\simeq 300\\,\\text{MeV}$ provides the best agreement, lower than the value $T_H \\simeq 320\\!-\\!340\\,\\text{MeV}$ inferred from ideal-string-gas fits to the vacuum hadron spectrum. A simultaneous calibration of the mesonic and baryonic EV parameters gives $b_M \\simeq 0.19\\,\\text{fm}^3$ and $b_B \\simeq 0.73\\,\\text{fm}^3$. Within the present spectral ansatz, the larger baryonic EV parameter indicates that stronger effective suppression is required in the baryon sector, although noticeable tensions remain in several conserved-charge observables.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.23292",
  "author_total": 2,
  "authors": [
    {
      "name": "Yuki Fujimoto"
    },
    {
      "name": "Volodymyr Vovchenko"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bey8trm8d2877.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.23292",
  "fulltext_url": null,
  "id": "bey8trm8d2877",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.23292",
  "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-ph"
    ],
    [
      "arxiv",
      "nucl-th"
    ],
    [
      "openalex",
      "3106|High-Energy Particle Collisions Research"
    ]
  ],
  "openalex": "W7214048268",
  "pdf_url": "https://arxiv.org/pdf/2609.23292",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bey8trm8d2877.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:19Z",
      "native_id": "2609.23292",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.23292"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "QCD thermodynamics through the crossover as a gas of confining strings with repulsive interactions",
  "title_text": "QCD thermodynamics through the crossover as a gas of confining strings with repulsive interactions",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:19Z",
  "url": "https://research.draconitic.com/paper/bey8trm8d2877",
  "venue": "arXiv",
  "versions": []
}