{
  "abstract": "In this paper, we present the 1-loop calculation of the three-point function $\\langle TJJ \\rangle$ of the stress-energy tensor and two insertions of $SO(3)$ global currents, using a 3d toy model for holographic cosmology. By applying the holographic dictionary that relates these QFT $n$-point functions to cosmological correlators, together with the $Sl(2,\\mathbb{Z})$ duality that maps the electric Noether current to a magnetic vortex current dual to cosmological magnetic monopoles, we relate the $\\langle TJJ \\rangle$ correlator to the cross-correlations between metric perturbations and the bulk magnetic monopole field, specifically mapping to the non-Gaussianities $\\langle ξ\\tilde{A} \\tilde{A} \\rangle$ and $\\langle γ\\tilde{A} \\tilde{A} \\rangle$. We calculate the semi-local contact terms necessary to achieve the exact factorization of the cosmological correlators in the squeezed limit, $p_1 \\to 0$. Finally, we evaluate the effective non-linear parameters, showing that the scalar-monopole cross-correlation vanishes at leading order, $f_{NL}^{ξ\\tilde{A} \\tilde{A}} = 0$, while the tensor-monopole cross-correlation yields a non-zero $f_{NL}^{γ\\tilde A\\tilde A}$. These results respect the expected amplitude hierarchy of the non-Gaussian correlators, while pointing at new directions in which holographic cosmology can be tested experimentally.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2607.24989",
  "author_total": 3,
  "authors": [
    {
      "name": "Matheus Cravo"
    },
    {
      "name": "Juliana Z. Finotti"
    },
    {
      "name": "Horatiu Nastase"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2t4f3b0dg5htw.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2607.24989",
  "fulltext_url": null,
  "id": "2t4f3b0dg5htw",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2607.24989",
  "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",
      "gr-qc"
    ],
    [
      "arxiv",
      "hep-th"
    ],
    [
      "openalex",
      "3106|Black Holes and Theoretical Physics"
    ]
  ],
  "openalex": "W7171672948",
  "pdf_url": "https://arxiv.org/pdf/2607.24989",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2t4f3b0dg5htw.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:12Z",
      "native_id": "2607.24989",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2607.24989"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "Cross-Correlations of Metric and Monopole Perturbations from Holographic Cosmology",
  "title_text": "Cross-Correlations of Metric and Monopole Perturbations from Holographic Cosmology",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:12Z",
  "url": "https://research.draconitic.com/paper/2t4f3b0dg5htw",
  "venue": "arXiv",
  "versions": []
}