{
  "abstract": "We give an independent closed-form construction of rotating five-dimensional Ellis--Bronnikov wormholes with equal angular momenta and analyze the radial instability of the reflection-symmetric family. The nontrivial coupled metric equations reduce exactly to an open $A_2$ Toda system. The general two-ended solution is expressed in terms of elementary Toda tau functions; the symmetric subclass reduces to a particularly simple one-parameter family interpolating between the static wormhole and the extremal equal-spin Myers--Perry geometry. On this exact background we revisit the cohomogeneity-one perturbation problem. Besides the ordinary unstable mode of the static wormhole, rotation renders the descendant of its non-normalizable zero mode normalizable. The two purely imaginary unstable frequencies coalesce at $|J|/A=0.100628$, where their eigenvectors coalesce as well, identifying a second-order exceptional point. Beyond it the pair continues as $ω_\\pm=\\pmω_R+\\mathrm iω_I$ with $ω_I>0$: the apparent loss of the radial instability found in the original real-eigenvalue treatment is therefore not stabilization, but a transition to an oscillatory instability. We follow this branch deep into the rapidly rotating regime, where its growth rate becomes strongly suppressed.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.38659",
  "author_total": 6,
  "authors": [
    {
      "name": "Jose Luis Blázquez-Salcedo"
    },
    {
      "name": "Luis Manuel González-Romero"
    },
    {
      "name": "Fech Scen Khoo"
    },
    {
      "name": "Burkhard Kleihaus"
    },
    {
      "name": "Jutta Kunz"
    },
    {
      "name": "Pablo Navarro Moreno"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f087za12n620r.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.38659",
  "fulltext_url": null,
  "id": "f087za12n620r",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.38659",
  "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",
      "gr-qc"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.38659",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/f087za12n620r.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:23Z",
      "native_id": "2610.38659",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.38659"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Exact Rotating Wormholes in Five Dimensions and Their Exceptional-Point Instability",
  "title_text": "Exact Rotating Wormholes in Five Dimensions and Their Exceptional-Point Instability",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:45Z",
  "url": "https://research.draconitic.com/paper/f087za12n620r",
  "venue": "arXiv",
  "versions": []
}