{
  "abstract": "In this work, the cosmology of the conformal interacting dark energy model is investigated by introducing a scalar field representing dark energy (DE) coupled to dark matter (DM) via a conformal transformation. This coupling yields a class of scalar+tensor theories; the interaction term ${Q}$, which indicates the flow of energy between the dark sectors, is proportional to the trace of the energy-momentum tensor of the DM fluid, $T^{\\mathrm{DM}}_{μν}$, as ${Q}=\\frac{C'(ϕ)}{2C(ϕ)}g^{μν}T^{\\mathrm{DM}}_{μν}$, where $C(ϕ)$ is the conformal function of a scalar potential (coupling) field. We assume the power-law parametrization $C(ϕ)\\propto (1+ϕ)^m$, with $m$ as the coupling parameter, and determine the direction and magnitude of energy flow between the DM and DE scalar-field components. We model DE in three scenarios: conformally interacting dark energy (CIDE) coupled to a scalar field, uncoupled scalar+field DE (UCSFDE), and standard $ Λ$CDM models. We confront these models with cosmological measurements to test the viability of CIDE and UCSFED against $Λ$CDM and constrain them using a combination of early and late time data, namely: Cosmic Microwave Background measurements from Planck 2018 Legacy (\\texttt{CMB}); Baryon Acoustic Oscillation (BAO) data from the Dark Energy Survey (\\texttt{ DESI DR2 DR2 BAO}); and Supernova Type Ia distance compilations (\\texttt{PantheonPlus, PantheonPlus + SH0ES, Union3}, and \\texttt{DES+Dovekie}). We perform parameter inference with Monte Carlo Markov Chain (\\texttt{MCMC}) simulations using \\texttt{COBAYA} and a modified \\texttt{CLASS} ...",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.07343",
  "author_total": 5,
  "authors": [
    {
      "name": "Shambel Sahlu"
    },
    {
      "name": "Abunie Gezahegn"
    },
    {
      "name": "Amare Abebe"
    },
    {
      "name": "Gonzalo J. Olmo"
    },
    {
      "name": "Diego Rubiera-Garcia"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/62tx6bxnv79ek.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.07343",
  "fulltext_url": null,
  "id": "62tx6bxnv79ek",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.07343",
  "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",
      "astro-ph.CO"
    ],
    [
      "arxiv",
      "gr-qc"
    ],
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7212035915",
  "pdf_url": "https://arxiv.org/pdf/2609.07343",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/62tx6bxnv79ek.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:22Z",
      "native_id": "2609.07343",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.07343"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Conformally Coupled Scalar- Field Dark Energy: Cosmological Dynamics with Early- and Late- Measurements",
  "title_text": "Conformally Coupled Scalar- Field Dark Energy: Cosmological Dynamics with Early- and Late- Measurements",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:44Z",
  "url": "https://research.draconitic.com/paper/62tx6bxnv79ek",
  "venue": "arXiv",
  "versions": []
}