{
  "abstract": "Holographic dark energy ties the dark-energy density to an infrared length. We study new Tsallis holographic dark energy (NTHDE), built on the exponential Tsallis entropy, with the local Granda-Oliveros (GO) cutoff $L^{-2}=αH^2+γ\\dot H$ in a spatially curved universe. Writing the background as an autonomous system for $(Ω_d,u,Ω_k)$, we obtain four exact results. (i) In the closed-form solution without the Tsallis deformation, the dark energy splits into a matter-like and a curvature-like part. (ii) Because the GO cutoff lacks the term $k/a^2$ of the Ricci scalar, the coefficient of $(1+z)^2$ in $H^2/H_0^2$ is $R_kΩ_{k0}$ with $R_k=(1-α+γ)^{-1}>1$, while distances and the Clarkson-Bassett-Lu test return $Ω_{k0}$; the Ricci completion restores $R_k=1$. (iii) Big-bang nucleosynthesis locks the matter-era dark-energy fraction to $1/(1+3|w_{\\rm GO}|)$, where $w_{\\rm GO}$ is the equation of state of the GO mode. (iv) The finite-time fold singularity of the flat model survives curvature. Against Pantheon+SH0ES supernovae, 32 cosmic chronometers and DESI DR2 BAO, curved GO-NTHDE gives $Ω_{k0}=-0.001^{+0.041}_{-0.043}$, consistent with flatness, and $Δχ^2=-2.82$ relative to flat $Λ$CDM, but the Bayesian evidence prefers flat $Λ$CDM ($\\ln B=-2.66\\pm0.24$), and allowing curvature costs $\\ln B=-1.39\\pm0.25$. The data cannot yet measure $R_k$: the GO and Ricci cutoffs fit equally well ($\\ln B=+0.28\\pm0.26$). With Union3 supernovae the model is on a par with $Λ$CDM ($\\ln B=+0.53$). A fraction 0.91 of the posterior reaches the finite-time fold.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.00194",
  "author_total": 4,
  "authors": [
    {
      "name": "Umesh Kumar Sharma"
    },
    {
      "name": "Pankaj"
    },
    {
      "name": "Bramha Dutta Pandey"
    },
    {
      "name": "P. Suresh Kumar"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/b8204tfwhykgt.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.00194",
  "fulltext_url": null,
  "id": "b8204tfwhykgt",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.00194",
  "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": "W7216278401",
  "pdf_url": "https://arxiv.org/pdf/2610.00194",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/b8204tfwhykgt.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2610.00194",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.00194"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Cosmology and Gravitation Theories",
      "subfield": "cosmology"
    }
  ],
  "title": "New Tsallis holographic dark energy with the Granda-Oliveros cutoff in a non-flat universe: curvature tracking and DESI DR2 constraints",
  "title_text": "New Tsallis holographic dark energy with the Granda-Oliveros cutoff in a non-flat universe: curvature tracking and DESI DR2 constraints",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/b8204tfwhykgt",
  "venue": "arXiv",
  "versions": []
}