{
  "abstract": "The neutron star (NS) mass distribution serves as a crucial probe of the dense matter equation of state (EOS) and core-collapse supernova explosion mechanisms. Although observations reveal a bimodal NS mass distribution, existing theoretical simulations often struggle to naturally reproduce the high-mass peak, and the impact of the quark-hadron phase transition (PT) in high-density nuclear matter remains largely unexplored. Employing the 1D general-relativistic hydrodynamics code GR1D with hybrid EOSs incorporating a first-order PT (RDF1.1 and RDF1.2), we systematically simulate core-collapse supernovae for progenitors with zero-age main-sequence masses ranging from 13 to 120 $M_\\odot$. Our results reveal a threefold impact of the PT onset density on the final supernova fate: in low-compactness progenitors, an early PT truncates accretion and produces less massive NSs; in the critical-compactness regime, it facilitates successful explosions; and in high-compactness progenitors, it accelerates black hole formation. Compared with the $\\sim 1.4\\,M_\\odot$ peak typical of the conventional core-collapse scenario, the inclusion of the PT produces NSs with masses centered around $1.70\\,M_\\odot$ for RDF1.1 and within $1.55$--$1.70\\,M_\\odot$ for RDF1.2. Furthermore, we identify a novel formation channel whereby low-compactness progenitors with failed initial shocks can form more massive NSs via a PT-induced second shock. Due to the fixed nature of the PT boundary, the final NS masses exhibit a pronounced clustering effect. This study elucidates the critical role of the quark-hadron PT in shaping the NS mass distribution, providing important astrophysical constraints on the properties of high-density nuclear matter and the formation mechanism of massive NSs.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.41242",
  "author_total": 8,
  "authors": [
    {
      "name": "Renyu Luo"
    },
    {
      "name": "XuRun Huang"
    },
    {
      "name": "Shuai Zha"
    },
    {
      "name": "Guoliang Lü"
    },
    {
      "name": "Chunhua Zhu"
    },
    {
      "name": "Sufen Guo"
    },
    {
      "name": "Helei Liu"
    },
    {
      "name": "Zhijun Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5aw01vvjws0cw.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.41242",
  "fulltext_url": null,
  "id": "5aw01vvjws0cw",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.41242",
  "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",
      "astro-ph.SR"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.41242",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5aw01vvjws0cw.ris",
  "sources": [
    {
      "first_seen": "2026-11-02T12:21:15Z",
      "native_id": "2610.41242",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.41242"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "Effect of quark-hadron phase transitions on the neutron star mass distribution",
  "title_text": "Effect of quark-hadron phase transitions on the neutron star mass distribution",
  "type": "preprint",
  "updated_at": "2026-11-04T15:20:51Z",
  "url": "https://research.draconitic.com/paper/5aw01vvjws0cw",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/cz9b-kzqr",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}