{
  "abstract": "The synergy between non-Hermiticity and topology makes the bulk-boundary correspondence (BBC) highly elusive. Here we study a non-Hermitian Creutz ladder incorporating both gain-loss and nonreciprocity, and construct multiple BBCs involving scale-free, normal, and anomalous skin modes, as well as topological zero- energy modes. We characterize the skin effect induced by the parity-time (PT) phase transition through an average winding number, thereby formulating a PT-related BBC. Furthermore, a hidden chiral symmetry ensures that topological phase transitions can be reliably detected via a Z 2 invariant. Although the gain-loss breaks the standalone P symmetry, it preserves the combined PT symmetry, allowing a modified Z 2 invariant to sustain the topological BBC. Notably, sublattice symmetry facilitates the precise analytical determination of non-Bloch spectra. Leveraging this, we introduce a hybrid spectral winding that encodes the localization (or delocalization) characteristics of two counterintuitive bulk modes coexisting with normal skin modes, thus defining a non-Hermitian BBC. One of these modes exhibits exponential boundary accumulation in a direction opposite to the nonreciprocity, while the other manifests as an anomalous surge of Bloch-wave states within the nonreciprocal lattice. These results reveal a series of unexpected phenomena governed by underlying symmetry, significantly broadening our fundamental understanding of the BBC mechanism in non-Hermitian topological systems.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.00954",
  "author_total": 4,
  "authors": [
    {
      "name": "Xin Li"
    },
    {
      "name": "TongYi Li"
    },
    {
      "name": "JingYu Peng"
    },
    {
      "name": "Yu Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/akgyesk6g2xdy.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.00954",
  "fulltext_url": null,
  "id": "akgyesk6g2xdy",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.00954",
  "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",
      "quant-ph"
    ],
    [
      "openalex",
      "3107|Quantum Mechanics and Non-Hermitian Physics"
    ]
  ],
  "openalex": "W7160235015",
  "pdf_url": "https://arxiv.org/pdf/2605.00954",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-18",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/akgyesk6g2xdy.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:19Z",
      "native_id": "2605.00954",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.00954"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Symmetry-Engineered Multiple Bulk-Boundary Correspondences and Anomalous Modes in a Non-Hermitian Creutz Ladder",
  "title_text": "Symmetry-Engineered Multiple Bulk-Boundary Correspondences and Anomalous Modes in a Non-Hermitian Creutz Ladder",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:19Z",
  "url": "https://research.draconitic.com/paper/akgyesk6g2xdy",
  "venue": "arXiv",
  "versions": []
}