{
  "abstract": "We study the charged Breitenlohner--Freedman (BF) bound for all horizon harmonics of the type IIB $t^+$ Kaluza--Klein tower on extremal charged AdS$_5$ black holes with equal rotations. The scalar equation follows from maximal five-dimensional gauged supergravity at level zero and the linearized exceptional-field-theory equations at higher levels. For aligned charge and rotation, a quadratic form in charge and spin changes signature on the curve of supersymmetric (BPS) black holes, where every mode satisfies the bound. Above the curve, where $Ω_H>1$, every black hole has a violating mode, although no finite truncation in level or spin detects violation at every such black hole. Below the curve, where $Φ_H>1$, the BF-passing set is confined to a thin strip and controlled by charge and spin discreteness. At large radius and fixed rotation, a level-four mode with spin proportional to the radius violates the bound even where all U(2) singlets satisfy it. These results concern the near-horizon BF bound of one tower in two-derivative supergravity; full radial stability remains open.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.37908",
  "author_total": 3,
  "authors": [
    {
      "name": "Xiao-Long Liu"
    },
    {
      "name": "Zheng Miao"
    },
    {
      "name": "Yuezhang Tang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cj68xpvncz1sb.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.37908",
  "fulltext_url": null,
  "id": "cj68xpvncz1sb",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.37908",
  "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",
      "hep-th"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.37908",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-27",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/cj68xpvncz1sb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:23Z",
      "native_id": "2610.37908",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.37908"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "Near-horizon BF bounds for the $t^+$ KK tower on extremal AdS$_5$ black holes",
  "title_text": "Near-horizon BF bounds for the t^+ KK tower on extremal AdS_5 black holes",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:44Z",
  "url": "https://research.draconitic.com/paper/cj68xpvncz1sb",
  "venue": "arXiv",
  "versions": []
}