{
  "abstract": "We construct a nuclear-matter equation of state (EOS) from holographic QCD in the Witten-Sakai-Sugimoto (WSS) model, going beyond the homogeneous ansatz by building dense baryonic matter more directly from the solitonic description of holographic baryons. Employing the two-baryon interaction potential obtained from the linearized soliton tails sourced in the curved background by point-like (core) instantons, we assemble an infinite face-centered cubic (FCC) crystal with nearest neighbors in the most attractive channel as an approximation to the quantum liquid of baryons and compute the energy density $\\mathcal{E}(n_B)$, the chemical potential $μ_B$, and the pressure $P$. We calibrate the symmetric-matter EOS by fixing the 't Hooft coupling $λ$ and the WSS scale $M_{\\rm KK}$ to saturation-density and onset-chemical-potential properties, and by including a quark-mass term to reproduce the physical pion mass $m_π=135\\,\\mathrm{MeV}$. This fit turns out to remain reasonably close to the parameters required by the vacuum meson sector, while their modification is consistent with Brown-Rho scaling in a dense medium, and the incompressibility at saturation is of the correct order of magnitude, both in clear contrast to the homogeneous approximation. We then extend to beta-equilibrated matter, using phenomenological input for the symmetry energy, and obtain hybrid EOS and neutron-star observables that are compatible with the NICER constraints.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2607.19125",
  "author_total": 4,
  "authors": [
    {
      "name": "Lorenzo Bartolini"
    },
    {
      "name": "Sven Bjarke Gudnason"
    },
    {
      "name": "Jonas Mager"
    },
    {
      "name": "Anton Rebhan"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/947pm7kfey9ma.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2607.19125",
  "fulltext_url": null,
  "id": "947pm7kfey9ma",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2607.19125",
  "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",
      "hep-th"
    ],
    [
      "openalex",
      "3103|Pulsars and Gravitational Waves Research"
    ]
  ],
  "openalex": "W7170079016",
  "pdf_url": "https://arxiv.org/pdf/2607.19125",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-18",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/947pm7kfey9ma.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:03Z",
      "native_id": "2607.19125",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2607.19125"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Holographic Soliton Crystals for Dense Nuclear Matter and Neutron Stars",
  "title_text": "Holographic Soliton Crystals for Dense Nuclear Matter and Neutron Stars",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:03Z",
  "url": "https://research.draconitic.com/paper/947pm7kfey9ma",
  "venue": "arXiv",
  "versions": []
}