{
  "abstract": "We investigate whether the coalescence of long-lived quasinormal modes enhances the boundary response of rotating BTZ black holes. Using exact scalar solutions with mixed Robin boundary conditions and the retarded boundary correlator, we compare frequency-domain resonances and time-domain signals at fixed source and operator normalizations. An exceptional point (EP) can be crossed by varying the spin alone in a suitably selected fixed theory. Along a distinct near-extremal path that tracks the co-rotating EP surface by tuning the scalar mass and boundary coupling, a taller, narrower resonance coexists with a weaker but longer-lasting double-pole impulse response. The frequency-domain enhancement persists away from the EP and is therefore not unique to mode coalescence. Thus, the EP determines the double-pole structure and Jordan relaxation, but does not by itself determine the response strength, which also depends on the physical path and excitation protocol.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.30612",
  "author_total": 7,
  "authors": [
    {
      "name": "Sheng Long"
    },
    {
      "name": "Yu Shi"
    },
    {
      "name": "Zhongwu Xia"
    },
    {
      "name": "Huajie Gong"
    },
    {
      "name": "Zhoujian Cao"
    },
    {
      "name": "Qin Tan"
    },
    {
      "name": "Qiyuan Pan"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2jtnynnhgf449.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.30612",
  "fulltext_url": null,
  "id": "2jtnynnhgf449",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.30612",
  "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",
      "gr-qc"
    ],
    [
      "openalex",
      "3106|Black Holes and Theoretical Physics"
    ]
  ],
  "openalex": "W7214673641",
  "pdf_url": "https://arxiv.org/pdf/2609.30612",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-16",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2jtnynnhgf449.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:30:32Z",
      "native_id": "2609.30612",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.30612"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Exceptional points and near-extremal boundary response in rotating BTZ black holes",
  "title_text": "Exceptional points and near-extremal boundary response in rotating BTZ black holes",
  "type": "preprint",
  "updated_at": "2026-10-30T12:33:28Z",
  "url": "https://research.draconitic.com/paper/2jtnynnhgf449",
  "venue": "arXiv",
  "versions": []
}