{
  "abstract": "In this paper, we investigate the complex phase structure and thermodynamic supercriticality of static four-charge anti-de Sitter (AdS) black holes in five-dimensional $STU-W^2U$ gauged supergravity, with all four physical electric charges held fixed. A Van der Waals-like first-order small/large black hole phase transition is found to terminate at a critical point. By analytically continuing the fixed-charge thermodynamic relations, we trace the two real spinodal singularities through criticality into a complex-conjugate pair in the supercritical region. The corresponding spinodal temperatures exhibit the characteristic $3/2$ near-critical scaling, connecting the subcritical temperature splitting with the imaginary parts of the supercritical complex temperatures. We construct the associated complex phase diagram and identify a Widom-type crossover line from the real-temperature projection of the complex spinodals. This line progressively deviates from the locus of real heat-capacity maxima as the pressure increases. At higher pressures, the real heat-capacity extrema eventually merge and disappear, while the complex spinodal singularities persist. Together, these results reveal a continuous connection between critical phase transitions and supercritical thermodynamics through complex singularity structures, providing further insight into the thermodynamic phase behavior of multicharge supergravity black holes.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.05624",
  "author_total": 2,
  "authors": [
    {
      "name": "Di Wu"
    },
    {
      "name": "Xiao-Dan Zhu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/84by80swjzqhh.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.05624",
  "fulltext_url": null,
  "id": "84by80swjzqhh",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.05624",
  "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"
    ],
    [
      "arxiv",
      "hep-th"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.05624",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/84by80swjzqhh.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T15:20:56Z",
      "native_id": "2611.05624",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.05624"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "Complex phase diagram and thermodynamic supercriticality of five-dimensional four-charge AdS black holes in $STU-W^2U$ gauged supergravity",
  "title_text": "Complex phase diagram and thermodynamic supercriticality of five-dimensional four-charge AdS black holes in STU−W^2U gauged supergravity",
  "type": "preprint",
  "updated_at": "2026-11-09T00:20:19Z",
  "url": "https://research.draconitic.com/paper/84by80swjzqhh",
  "venue": "arXiv",
  "versions": []
}