{
  "abstract": "We study the effects of the symmetry-energy curvature $K_{\\rm sym}$ on the equation of state (EoS) and neutron-star properties within the relativistic mean-field (RMF) framework. We construct controlled families of RMF parametrizations based on the TM1 and IUFSU models by varying $K_{\\rm sym}$ while keeping the symmetry energy $J$ and its slope $L$ fixed at saturation density. We find that, although a larger $K_{\\rm sym}$ leads to a lower symmetry energy at suprasaturation densities and a reduced proton fraction in $β$-equilibrated matter, it results in a stiffer EoS and a higher sound speed. The maximum neutron-star mass is weakly affected, whereas the canonical radius $R_{1.4}$ exhibits a nearly linear dependence on $K_{\\rm sym}$.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.01722",
  "author_total": 6,
  "authors": [
    {
      "name": "Zijing Zhou"
    },
    {
      "name": "Xuhao Wu"
    },
    {
      "name": "Shishao Bao"
    },
    {
      "name": "Min Ju"
    },
    {
      "name": "Jinniu Hu"
    },
    {
      "name": "Hong Shen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0fpes0decvh8w.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.01722",
  "fulltext_url": null,
  "id": "0fpes0decvh8w",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.01722",
  "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",
      "astro-ph.HE"
    ],
    [
      "arxiv",
      "nucl-th"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.01722",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0fpes0decvh8w.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:59Z",
      "native_id": "2611.01722",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.01722"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Higher-Order Symmetry Energy Effects on the Properties of Neutron Stars",
  "title_text": "Higher-Order Symmetry Energy Effects on the Properties of Neutron Stars",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:18Z",
  "url": "https://research.draconitic.com/paper/0fpes0decvh8w",
  "venue": "arXiv",
  "versions": []
}