{
  "abstract": "In the parity doublet model the nucleon mass includes a chiral invariant part $m_0$, which is conventionally assumed to be medium independent. We promote this assumption to a dynamical question by making the model scale invariant using a dilaton compensator $χ$, so that the effective chiral invariant mass $m_{\\rm inv}^\\ast = m_0\\tildeχ$, with $\\tildeχ= χ/f_χ$, responds to the partial restoration of scale symmetry in the medium. We fit the model parameters by using vacuum spectra, nuclear matter properties, and NICER mass--radius posteriors---with the hadronic equation of state connected to 2+1-flavor Nambu--Jona-Lasinio quark matter by an interpolation. The best fit gives $m_0 = 657$ MeV, a maximum neutron-star mass of $2.30\\,M_\\odot$ and $R_{1.4} = 12.22$ km, with the mass--radius sequence passing through all three NICER credible regions. The resulting tidal deformabilities, $Λ_{1.4} = 387$ and $\\tildeΛ= 463$, are consistent with GW170817 measurements. The in-medium analysis separates the two restorations: at the hadron--quark matching density the chiral condensate falls to $56\\%$ of its vacuum value, while the dilaton decreases only to $94\\%$, so the nucleon arrives at the matching density with $90\\%$ of its mass carried by the invariant part. The order parameters of chiral and scale symmetries organize the in-medium probes, making the $ω$ an almost pure probe of scale symmetry and the $ρ$ of chiral restoration, which gives us a clue on the origin of hadron mass.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.08163",
  "author_total": 4,
  "authors": [
    {
      "name": "Yao Ma"
    },
    {
      "name": "Bikai Gao"
    },
    {
      "name": "Masayasu Harada"
    },
    {
      "name": "Yong-Liang Ma"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/efn6t527bpn3j.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.08163",
  "fulltext_url": null,
  "id": "efn6t527bpn3j",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.08163",
  "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": null,
  "pdf_url": "https://arxiv.org/pdf/2611.08163",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-05",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/efn6t527bpn3j.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T18:21:30Z",
      "native_id": "2611.08163",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.08163"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Chiral invariant mass and scale symmetry in dense matter from a dilaton compensated parity doublet model",
  "title_text": "Chiral invariant mass and scale symmetry in dense matter from a dilaton compensated parity doublet model",
  "type": "preprint",
  "updated_at": "2026-11-09T00:20:41Z",
  "url": "https://research.draconitic.com/paper/efn6t527bpn3j",
  "venue": "arXiv",
  "versions": []
}