{
  "abstract": "Kaniadakis entropy deforms the horizon entropy through a single parameter $K$, and the holographic dark energy built on it (KHDE) reduces to the standard model as $K\\to0$. We ask whether current data can detect this deformation when spatial curvature is free and no cosmic-microwave-background calibration is assumed. Combining Pantheon+SH0ES supernovae, with the absolute magnitude fitted against the Cepheid calibrators, 32 cosmic-chronometer measurements of $H(z)$ and DESI DR2 baryon acoustic oscillations with a free sound horizon, we find that non-flat KHDE fits the data as well as flat $Λ$CDM ($Δχ^2=-2.1$ for three additional parameters) but leaves $K$ unconstrained: the profile $χ^2$ changes by only $0.47$ between $K=0$ and its best value, and the bound $K<0.67$ (95%) reflects the validity domain of the model rather than the data. Information criteria therefore prefer $Λ$CDM ($Δ\\mathrm{AIC}=+3.9$, $Δ\\mathrm{BIC}=+20.2$). The joint fit gives $Ω_{k0}=0.012\\pm0.045$, three times tighter than supernovae alone, $H_0=72.04\\pm0.85\\,\\mathrm{km\\,s^{-1}\\,Mpc^{-1}}$ and $r_d=139.34\\pm1.76\\,\\mathrm{Mpc}$; chronometers and DESI alone prefer $H_0=68.17\\pm1.93$, $2.4σ$ below the supernova value. In the fitted model, acceleration begins at $z_t=0.66\\pm0.03$; a model-independent neural-network reconstruction of $H(z)$ from the chronometers gives a present-day deceleration parameter $q_0=-0.46\\pm0.14$, consistent with the model. We also identify three analysis requirements which, if ignored, make the deformation numerically invisible, underestimate the $H_0$ uncertainty fourfold, or spuriously reject the model.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.26883",
  "author_total": 2,
  "authors": [
    {
      "name": "P. Suresh Kumar"
    },
    {
      "name": "Said Salim AL Kathiri"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8nad5yberzbhz.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.26883",
  "fulltext_url": null,
  "id": "8nad5yberzbhz",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.26883",
  "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",
      "physics.gen-ph"
    ],
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7223116377",
  "pdf_url": "https://arxiv.org/pdf/2610.26883",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-09",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8nad5yberzbhz.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.26883",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.26883"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Cosmology and Gravitation Theories",
      "subfield": "cosmology"
    }
  ],
  "title": "Is the Kaniadakis deformation of holographic dark energy detectable? A non-flat analysis with DESI DR2, cosmic chronometers and Pantheon+SH0ES",
  "title_text": "Is the Kaniadakis deformation of holographic dark energy detectable? A non-flat analysis with DESI DR2, cosmic chronometers and Pantheon+SH0ES",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/8nad5yberzbhz",
  "venue": "arXiv",
  "versions": []
}