{
  "abstract": "We study BPS states in the D1--D5 CFT through their fortuity, cycle structure, and probe response. Explicit fortuitous states with both long- and short-string geometries show that the cycle partition does not determine fortuity state by state. At large $N$, fixed-charge counting nevertheless selects a long string. In the open uncondensed region, an entropy-carrying exact non-graviton subspace concentrates on one cycle of winding $N-O(1)$. Assuming subexponential monotone dimension, the same holds for the harmonic fortuitous complement. Beyond the critical line, the free ensemble develops a short-string condensate. To test how this cycle structure appears in observables, we study finite-winding probes. The long-cycle scalar correlator approaches the extremal-BTZ response at fixed time, while finite winding is resolved at \\(t=O(\\sqrt N)\\), the exact circle recurs at \\(t=O(N)\\), and states with the same cycle geometry remain distinguishable by their spectral weights.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.35688",
  "author_total": 1,
  "authors": [
    {
      "name": "Ji-Seong Chae"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0n4jh3wvtcrag.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.35688",
  "fulltext_url": null,
  "id": "0n4jh3wvtcrag",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.35688",
  "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",
      "3106|Black Holes and Theoretical Physics"
    ]
  ],
  "openalex": "W7214799183",
  "pdf_url": "https://arxiv.org/pdf/2609.35688",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0n4jh3wvtcrag.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:12Z",
      "native_id": "2609.35688",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.35688"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "Microscopic Organization of BPS Black-Hole States in the D1--D5--P CFT",
  "title_text": "Microscopic Organization of BPS Black-Hole States in the D1--D5--P CFT",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:12Z",
  "url": "https://research.draconitic.com/paper/0n4jh3wvtcrag",
  "venue": "arXiv",
  "versions": []
}