{
  "abstract": "We connect microscopic nonreciprocity to chiral boundary transport in a minimal frustrated Vicsek--Kuramoto model. Unlike field-level constructions, a low-angular-harmonic closure of particle dynamics yields the non-Hermitian operator. Direction-independent polar projector limits permit wave-number compactification, and the Sakaguchi phase lag reverses the polar spin weights, producing $C=\\pm2$ where the closure is nonsingular and the projector remains globally isolated. Strip edge-mode propagation agrees with particle circulation. Crucially, chirality and defect tolerance are distinct: before pattern onset, boundary streams retain chirality on regular convex boundaries but are vulnerable to strong isolated defects; an interior vortex lattice supports a counterpropagating edge stream with substantially stronger defect tolerance in the tested geometries. Thus spectral topology selects a chiral boundary branch, while pattern formation supports its robust nonlinear realization.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2606.24926",
  "author_total": 2,
  "authors": [
    {
      "name": "Tong Zhu"
    },
    {
      "name": "Zhigang Zheng"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/btsrkndqzmmjm.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.24926",
  "fulltext_url": null,
  "id": "btsrkndqzmmjm",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.24926",
  "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",
      "cond-mat.stat-mech"
    ],
    [
      "arxiv",
      "nlin.AO"
    ],
    [
      "openalex",
      "3107|Quantum Mechanics and Non-Hermitian Physics"
    ]
  ],
  "openalex": "W7165907055",
  "pdf_url": "https://arxiv.org/pdf/2606.24926",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-09",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/btsrkndqzmmjm.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:12Z",
      "native_id": "2606.24926",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.24926"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.stat-mech",
      "subfield": "statistical-nonlinear"
    }
  ],
  "title": "Microscopic Nonreciprocity-Governed Topological Boundary Flows in Active Matter",
  "title_text": "Microscopic Nonreciprocity-Governed Topological Boundary Flows in Active Matter",
  "type": "preprint",
  "updated_at": "2026-10-30T12:20:12Z",
  "url": "https://research.draconitic.com/paper/btsrkndqzmmjm",
  "venue": "arXiv",
  "versions": []
}