{
  "abstract": "We present a unified Bayesian analysis of Higgs-portal, neutron-decay, and axion-like-particle (ALP)-mediated dark matter in neutron stars within the single-fluid approximation. Using a common relativistic mean-field description of hadronic matter, we combine finite-nucleus and heavy-ion collision data, chiral effective field theory, NICER measurements of four pulsars, and GW170817. The individual dark-sector parameters remain weakly determined, while model-dependent shifts in nuclear skewness reveal the sensitivity of the inferred hadronic equation of state to the assumed dark-matter mechanism. The three scenarios yield substantially overlapping mass-radius and tidal-deformability predictions, with median maximum masses near $2.1\\,M_\\odot$. For $1.4\\,M_\\odot$ stars, the Higgs-portal model predicts higher $f$-mode frequencies and shorter damping times than the neutron-decay and ALP models, although their credible regions overlap. Comparison with three consistently reanalysed two-fluid models gives the largest Bayesian evidence to neutron decay: under the adopted priors, its Bayes factors relative to the Higgs-portal and two-fluid alternatives are approximately $24$-$37$, but only $2.2$ relative to ALP. This ranking concerns complete dark-matter models and does not establish a general preference for either fluid description or evidence for a dark component itself. Improved nuclear constraints and future gravitational-wave asteroseismology could provide complementary information to disentangle the hadronic and dark-sector contributions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.15713",
  "author_total": 3,
  "authors": [
    {
      "name": "Payaswinee Arvikar"
    },
    {
      "name": "Prashant Thakur"
    },
    {
      "name": "Sarmistha Banik"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5yb975twa76xg.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.15713",
  "fulltext_url": null,
  "id": "5yb975twa76xg",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.15713",
  "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",
      "astro-ph.HE"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3103|Pulsars and Gravitational Waves Research"
    ]
  ],
  "openalex": "W7221801144",
  "pdf_url": "https://arxiv.org/pdf/2610.15713",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-11",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5yb975twa76xg.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.15713",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.15713"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Bayesian exploration of weakly interacting models of dark matter admixed neutron stars based on multi-density constraints",
  "title_text": "Bayesian exploration of weakly interacting models of dark matter admixed neutron stars based on multi-density constraints",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/5yb975twa76xg",
  "venue": "arXiv",
  "versions": []
}