{
  "abstract": "We develop an effective description of a two-dimensional cosmological end-of-the-world brane embedded in AdS$_3$, with a scalar field localized on the brane. Integrating out bulk degrees of freedom, especially in the small-gradient regime, the effective action reduces to a Liouville-like theory coupled to the brane scalar. We then construct brane trajectories whose induced geometry realizes slow-roll inflation and reconstruct the associated scalar profile and potential. We also study regular Euclidean brane geometries that admit a smooth continuation to Lorentzian de Sitter and inflationary universes, and evaluate the semiclassical on-shell action for the de Sitter solution. Finally, we analyze linearized inhomogeneous perturbations and find no exponentially growing mode within the regime of validity of the approximation.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.11643",
  "author_total": 5,
  "authors": [
    {
      "name": "Kosei Fujiki"
    },
    {
      "name": "Michitaka Kohara"
    },
    {
      "name": "Jason Kristiano"
    },
    {
      "name": "Yu-ki Suzuki"
    },
    {
      "name": "Tadashi Takayanagi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6drnwqp07qnyk.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.11643",
  "fulltext_url": null,
  "id": "6drnwqp07qnyk",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.11643",
  "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",
      "gr-qc"
    ],
    [
      "arxiv",
      "hep-th"
    ],
    [
      "openalex",
      "3106|Black Holes and Theoretical Physics"
    ]
  ],
  "openalex": "W7212295038",
  "pdf_url": "https://arxiv.org/pdf/2609.11643",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6drnwqp07qnyk.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:48Z",
      "native_id": "2609.11643",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.11643"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "Effective Dynamics of Inflationary End-of-the-World Branes in AdS$_3$",
  "title_text": "Effective Dynamics of Inflationary End-of-the-World Branes in AdS_3",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:48Z",
  "url": "https://research.draconitic.com/paper/6drnwqp07qnyk",
  "venue": "arXiv",
  "versions": []
}