{
  "abstract": "BPS states in holographic CFTs are usually classified into supergravitons, namely BPS fluctuations around empty AdS, and black-hole microstates, which appear above an energy threshold. In AdS3/CFT2, however, this picture is incomplete because of additional degrees of freedom, called singletons, associated with boundary diffeomorphisms. We present a general procedure for extending the BPS spectrum of supergravitons by dressing them with singletons, thereby defining a generalized, gravity-sector Hilbert space in CFT that admits a decomposition into affine multiplets of the full superconformal algebra. This extends the procedure previously proposed in [1] which was applicable only at low levels, by removing that limitation. We apply the new procedure to the D1-D5 CFT SymN (T 4) and explicitly construct affine multiplets in the gravity sector for the N = 2 theory up to level h = 2. We find that, at the free orbifold point, the gravity-sector spectrum agrees with the CFT spectrum up to $$ h=\\frac{1}{2} $$. Upon turning on a deformation, however, states at h = 1 lift and the agreement improves to $$ h=\\frac{3}{2} $$. Interestingly, the lifting occurs between states in the gravity sector, involving mixtures of supergravitons and singletons, and stringy states. In the cases we consider we find that, upon deformation, the gravity-sector Hilbert space becomes the monotone Hilbert space while its complement becomes the fortuitous Hilbert space.",
  "abstract_shown": true,
  "affiliations": [
    "Nagoya University",
    "Kyoto University"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Marcel R. R. Hughes",
      "orcid": "0000-0001-5484-8929"
    },
    {
      "affs": [
        0
      ],
      "name": "Kohei Jin",
      "orcid": "0009-0005-7042-6861"
    },
    {
      "affs": [
        0
      ],
      "name": "Daiki Matsumoto",
      "orcid": "0009-0009-6342-9596"
    },
    {
      "affs": [
        0
      ],
      "name": "Leon Miyahara",
      "orcid": "0009-0001-3995-7200"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Masaki Shigemori",
      "orcid": "0000-0003-0079-5862"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4scy7wzn8wx1d.bib",
  "cited_by": 0,
  "doi": "10.1007/jhep10(2026)253",
  "fulltext_url": null,
  "id": "4scy7wzn8wx1d",
  "issns": [
    "1029-8479"
  ],
  "landing_url": "https://link.springer.com/article/10.1007/JHEP10(2026)253",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "feed-journal",
      "physics/high-energy"
    ],
    [
      "openalex",
      "3106|Black Holes and Theoretical Physics"
    ]
  ],
  "openalex": "W7155378112",
  "pdf_url": "https://link.springer.com/content/pdf/10.1007/JHEP10(2026)253.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-26",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/4scy7wzn8wx1d.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:17Z",
      "native_id": "10.1007/jhep10(2026)253",
      "source": "feed-springer",
      "url": "https://link.springer.com/article/10.1007/JHEP10(2026)253"
    },
    {
      "first_seen": "2026-10-30T12:18:01Z",
      "native_id": "10.1007/jhep10(2026)253",
      "source": "crossref",
      "url": "https://link.springer.com/article/10.1007/JHEP10(2026)253"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3106|Black Holes and Theoretical Physics",
      "subfield": "high-energy"
    }
  ],
  "title": "Towering gravitons in AdS3/CFT2",
  "title_text": "Towering gravitons in AdS3/CFT2",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:01Z",
  "url": "https://research.draconitic.com/paper/4scy7wzn8wx1d",
  "venue": "Journal of High Energy Physics",
  "versions": []
}