{
  "abstract": "Boundary dissipation can reshape the spatial profiles and decay properties of topological edge modes in Chern insulators. We develop a microscopic boundary-channel framework to explain their decay mechanisms and determine the effective decay rates in the weak- and strong-loss regimes. By retaining the lossy outer orbitals and a normalized edge state of the Hermitian inner system, we identify a directly coupled bright boundary channel, while incorporating the remaining inner states through a Feshbach self-energy. In the Qi--Wu--Zhang model, weak-loss decay is governed to leading order by the original edge state's probability weight on the lossy boundary, with coupling-induced corrections starting at cubic order. At strong loss, the reconstructed inner-edge state instead decays through virtual coupling to the damped bright channel, giving a rate proportional to the squared microscopic coupling and inversely proportional to the bare loss. The Haldane model shows that the same leading decay mechanism holds for a different intercell hopping structure, while additional matrix-valued self-energy feedback modifies the boundary spectrum at finite loss and shifts the exceptional-point threshold. These results provide a unified microscopic description of boundary-state reconstruction and its decay mechanisms, offering testable predictions to guide experiments in photonic crystals, phononic crystals, and topolectrical circuits.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.37164",
  "author_total": 5,
  "authors": [
    {
      "name": "Xin-Ran Ma"
    },
    {
      "name": "Kui Cao"
    },
    {
      "name": "Qian Du"
    },
    {
      "name": "Zheng Wei"
    },
    {
      "name": "Su-Peng Kou"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5572jhtnns2p6.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.37164",
  "fulltext_url": null,
  "id": "5572jhtnns2p6",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.37164",
  "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.mes-hall"
    ],
    [
      "openalex",
      "3107|Topological Materials and Phenomena"
    ]
  ],
  "openalex": "W7224126707",
  "pdf_url": "https://arxiv.org/pdf/2610.37164",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-27",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5572jhtnns2p6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:50Z",
      "native_id": "2610.37164",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.37164"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Reconstructing chiral edge states via boundary dissipation",
  "title_text": "Reconstructing chiral edge states via boundary dissipation",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:50Z",
  "url": "https://research.draconitic.com/paper/5572jhtnns2p6",
  "venue": "arXiv",
  "versions": []
}