{
  "abstract": "A challenge of growing interest is how to make topology observable when conventional gap-based frameworks no longer suffice. In bulk-edge correspondence, this challenge arises when the global band gap closes and localized boundary modes disappear, even though the bulk topology remains intact. Here we show that interactions unlock a novel emergent boundary response from this spectrally hidden topology without reopening the global band gap. These interaction-induced excitations originate from a bulk-band minimum, yet reconstruct the characteristic boundary channels of a gapped topological parent sharing the same Bloch eigenspaces. We establish this interaction-enabled bulk-boundary correspondence for first- and higher-order topology in one- and two-dimensional bosonic lattices, respectively, and identify a general compatibility principle governing its emergence. Our results extend bulk-boundary correspondence beyond its conventional spectral manifestation, with experimental prospects in cold-atom and photonic platforms.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.01873",
  "author_total": 5,
  "authors": [
    {
      "name": "Cong Ding"
    },
    {
      "name": "Xuzhen Cao"
    },
    {
      "name": "Zhifu Shi"
    },
    {
      "name": "Yuqing Li"
    },
    {
      "name": "Ying Hu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/97dg50207g173.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.01873",
  "fulltext_url": null,
  "id": "97dg50207g173",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.01873",
  "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",
      "cond-mat.quant-gas"
    ],
    [
      "arxiv",
      "cond-mat.str-el"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.01873",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/97dg50207g173.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:59Z",
      "native_id": "2611.01873",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.01873"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.quant-gas",
      "subfield": "amo"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.quant-gas",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Interaction-Enabled Bulk-Boundary Correspondence without a Global Band Gap",
  "title_text": "Interaction-Enabled Bulk-Boundary Correspondence without a Global Band Gap",
  "type": "preprint",
  "updated_at": "2026-11-03T12:20:59Z",
  "url": "https://research.draconitic.com/paper/97dg50207g173",
  "venue": "arXiv",
  "versions": []
}