{
  "abstract": "We investigate how a fixed, spatially uniform axion angle modifies the rotational and static tidal properties of self-bound quark stars in general relativity, using an axion-extended Polyakov-loop Nambu--Jona-Lasinio equation of state. We vary $θ$ from $0$ to $π$ while holding the remaining model parameters fixed, and compute the leading-order moment of inertia and the second-order spin-induced quadrupole moment and mass shift. The calculation includes finite-surface-density contributions to the rotational mass shift and static tidal response. Across this range, the static maximum mass increases from $1.68$ to $1.95\\,M_\\odot$, remaining below the lower edge of the quoted $1σ$ timing interval for PSR~J0740+6620. At $M=1.338\\,M_\\odot$, the moment of inertia increases by $13\\%$ and the dimensionless tidal deformability rises from $342$ to $547$. Over the common mass range examined, the differences in the moment of inertia between adjacent sampled angles exceed the tested interpolation and table-resolution sensitivities. Despite these changes, joint fits to the five sequences describe the $\\bar I$--$C$ and I-Love-Q relations with maximum departures of $2.7\\%$ and $0.4\\%$, respectively, over the fitted domains. The predicted binary tidal-deformability curves lie within the estimated 90\\% credible region of the adopted GW170817 posterior over the mass-ratio ranges examined. Within this EOS family, stellar properties vary appreciably with $θ$, while the normalized quantities admit accurate joint fits across the five sequences.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.38343",
  "author_total": 4,
  "authors": [
    {
      "name": "Safiqul Islam"
    },
    {
      "name": "Ayan Banerjee"
    },
    {
      "name": "Javlon Rayimbaev"
    },
    {
      "name": "Safyan Mukhtar"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/742n0wexgm7mp.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.38343",
  "fulltext_url": null,
  "id": "742n0wexgm7mp",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.38343",
  "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",
      "gr-qc"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.38343",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/742n0wexgm7mp.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:23Z",
      "native_id": "2610.38343",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.38343"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Axion-angle dependence of the rotational and tidal properties of PNJL quark stars",
  "title_text": "Axion-angle dependence of the rotational and tidal properties of PNJL quark stars",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:44Z",
  "url": "https://research.draconitic.com/paper/742n0wexgm7mp",
  "venue": "arXiv",
  "versions": []
}