{
  "abstract": "We study holographic dark energy models constructed from generalized entropy functionals and local infrared cut-offs. Three entropies (Barrow and the three and five-parameter generalized entropies) are each combined with the Granda-Oliveros (GO) cut-off and two extensions, one adding a $γH^{-2}$ term and one a $γ\\ddot{H}/H$ term, the latter raising the dark-energy evolution equation to second order. The nine resulting models are constrained against DESI DR2 BAO, Pantheon+ and a Planck compressed CMB likelihood through an MCMC analysis, and compared using the Akaike and Bayesian information criteria. The Hubble constant is stable across all models. The $H^{-2}$ term is unconstrained in every case, as it becomes relevant only in the far future, and never improves on the GO cut-off. The $\\ddot{H}/H$ term, instead, is tightly constrained for Barrow and $S_5$, where it improves the fit substantially, but not for $S_3$. The best fit is obtained for Barrow entropy with the $\\ddot{H}/H$ cut-off, yet the Barrow exponent remains compatible with zero in all cases. The data thus favour a higher-order infrared cut-off, while showing no significant evidence for a departure from the Bekenstein-Hawking area law. We also investigate the dark energy equation of state (EoS) of $S_3$ and $S_5$, discovering quintessence-like behavior and phantom crossing.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.11616",
  "author_total": 4,
  "authors": [
    {
      "name": "Ke Chen"
    },
    {
      "name": "Simone D'Onofrio"
    },
    {
      "name": "Sergei D. Odintsov"
    },
    {
      "name": "Tanmoy Paul"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/c6qkdn7ncv5m8.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.11616",
  "fulltext_url": null,
  "id": "c6qkdn7ncv5m8",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.11616",
  "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.CO"
    ],
    [
      "arxiv",
      "gr-qc"
    ],
    [
      "arxiv",
      "hep-th"
    ],
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7221159194",
  "pdf_url": "https://arxiv.org/pdf/2610.11616",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/c6qkdn7ncv5m8.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:54Z",
      "native_id": "2610.11616",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.11616"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "Holographic dark energy from generalized entropies and extended infrared cut-offs",
  "title_text": "Holographic dark energy from generalized entropies and extended infrared cut-offs",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:54Z",
  "url": "https://research.draconitic.com/paper/c6qkdn7ncv5m8",
  "venue": "arXiv",
  "versions": []
}