{
  "abstract": "We constrain the phenomenological interacting dark energy ( $$\\xi $$ ξ IDE) model, in which the relative evolution of dark matter and dark energy is characterized by the scaling relation $$\\rho _\\textrm{X}/\\rho _m \\propto a^{\\xi }$$ ρ X / ρ m ∝ a ξ , using baryon acoustic oscillation measurements from DESI Data Releases 1 and 2, combined with cosmic chronometers, compressed CMB likelihoods, and the Pantheon $$^+$$ + , DES-Dovekie, and Union3 Type Ia supernova samples. Parameter constraints are obtained using the cosmological inference code . Relative to $$\\Lambda $$ Λ CDM, the $$\\xi $$ ξ IDE model mildly favors higher values of the Hubble constant, reducing but not resolving the $$H_0$$ H 0 tension. The parameter $$\\xi $$ ξ remains close to its $$\\Lambda $$ Λ CDM limit, while most dataset combinations favor $$w_\\textrm{X}>-1$$ w X > - 1 , indicating a mild preference for quintessence-like dark energy. The interaction combination $$\\xi +3w_\\textrm{X}$$ ξ + 3 w X is negative for all dataset combinations, corresponding to energy transfer from dark energy to dark matter. The strongest deviation from the non-interacting limit is obtained for CMB + DESI DR2 + CC + Union3, with $$\\xi +3w_\\textrm{X}=-0.035\\pm 0.023$$ ξ + 3 w X = - 0.035 ± 0.023 , corresponding to only $$1.52\\sigma $$ 1.52 σ . Although the $$N\\sigma $$ N σ statistic shows a weak preference for the interacting scenario, Bayesian evidence consistently favors $$\\Lambda $$ Λ CDM. Overall, observations provide no compelling evidence for a nonzero dark-sector interaction, despite a consistent mild preference for energy transfer from dark energy to dark matter.",
  "abstract_shown": true,
  "affiliations": [
    "Tribhuvan University",
    "Walailak University",
    "Istanbul University",
    "National University of Uzbekistan",
    "University of Tashkent for Applied Sciences",
    "Andijan State University"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Anil Kandel",
      "orcid": "0009-0004-9712-9763"
    },
    {
      "affs": [
        1
      ],
      "name": "Phongpichit Channuie",
      "orcid": "0000-0003-4489-1207"
    },
    {
      "affs": [
        2
      ],
      "name": "Ertan Güdekli",
      "orcid": "0000-0002-1174-6110"
    },
    {
      "affs": [
        3,
        4,
        5
      ],
      "name": "Farruh Atamurotov",
      "orcid": "0000-0001-8857-4970"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7x5wqdtk0sp96.bib",
  "cited_by": 0,
  "doi": "10.1140/epjc/s10052-026-16492-4",
  "fulltext_url": "https://doi.org/10.1140/epjc/s10052-026-16492-4",
  "id": "7x5wqdtk0sp96",
  "issns": [
    "1434-6044",
    "1434-6052"
  ],
  "landing_url": "https://link.springer.com/article/10.1140/epjc/s10052-026-16492-4",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "QB460-466"
    ],
    [
      "lcc",
      "QC770-798"
    ],
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7168356443",
  "pdf_url": "https://link.springer.com/content/pdf/10.1140/epjc/s10052-026-16492-4.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-23",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/7x5wqdtk0sp96.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:04Z",
      "native_id": "10.1140/epjc/s10052-026-16492-4",
      "source": "crossref",
      "url": "https://link.springer.com/article/10.1140/epjc/s10052-026-16492-4"
    },
    {
      "first_seen": "2026-10-30T13:46:23Z",
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      "url": "https://doi.org/10.1140/epjc/s10052-026-16492-4"
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  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Cosmology and Gravitation Theories",
      "subfield": "cosmology"
    }
  ],
  "title": "Testing the direction of dark sector interaction using late-time datasets",
  "title_text": "Testing the direction of dark sector interaction using late-time datasets",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:46:23Z",
  "url": "https://research.draconitic.com/paper/7x5wqdtk0sp96",
  "venue": "The European Physical Journal C",
  "versions": []
}