{
  "abstract": "Multipartite entanglement measures probe how quantum correlations are organized beyond what can be inferred from pairwise entropies. We study how this structure is reshaped by a physical boundary in a holographic BCFT. The end-of-the-world brane opens new relative-homology channels for multipartite entanglement, allowing connected bulk webs to reorganize and factorize at scales that need not coincide with any ordinary Ryu--Takayanagi transition. In static AdS$_3$/BCFT$_2$, this produces a characteristic hierarchy of multipartite phases and a nontrivial dependence of genuine multi-entropy on the boundary. In the thermofield-double state, genuinely connected webs can instead be supported through the Einstein--Rosen bridge, leading to growth, reconnection and saturation scales distinct from the usual Hartman--Maldacena transitions. These results show that multipartite entanglement is sensitive not only to extremal-surface areas but also to how bulk entanglement structures are allowed to join, split and terminate in the presence of a boundary.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.11921",
  "author_total": 3,
  "authors": [
    {
      "name": "Debarshi Basu"
    },
    {
      "name": "Qiang Wen"
    },
    {
      "name": "Mingshuai Xu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8akpep12f8awy.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.11921",
  "fulltext_url": null,
  "id": "8akpep12f8awy",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.11921",
  "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",
      "hep-th"
    ],
    [
      "openalex",
      "3106|Black Holes and Theoretical Physics"
    ]
  ],
  "openalex": "W7221088305",
  "pdf_url": "https://arxiv.org/pdf/2610.11921",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-17",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8akpep12f8awy.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:30:52Z",
      "native_id": "2610.11921",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.11921"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "Multipartite Entanglement Geometry in AdS/BCFT",
  "title_text": "Multipartite Entanglement Geometry in AdS/BCFT",
  "type": "preprint",
  "updated_at": "2026-10-30T12:33:41Z",
  "url": "https://research.draconitic.com/paper/8akpep12f8awy",
  "venue": "arXiv",
  "versions": []
}