{
  "abstract": "The quantum Fisher information (QFI) of the vacuum of three quantum field theories is evaluated with respect to the mass parameter of each theory. All field theories are considered on a $(d+1)$-dimensional Euclidean spacetime. We consider the Klein-Gordon field and the free Dirac field. For the free KG case, we find a $m^{d-2}$ dependence of the QFI, and thus no dependence for $d=2$, in agreement with the holographic duality characterizing the theory. The vacuum QFI with respect to the free Dirac field mass is shown to be UV-divergent for $d=2$ and $d=3$, mass-dependent for $d=1$, and zero for $d=0$.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2607.26919",
  "author_total": 2,
  "authors": [
    {
      "name": "Preslav Asenov"
    },
    {
      "name": "Alessio Serafini"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/awekffkkdj2yy.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2607.26919",
  "fulltext_url": null,
  "id": "awekffkkdj2yy",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2607.26919",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-th"
    ],
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "3106|Black Holes and Theoretical Physics"
    ]
  ],
  "openalex": "W7171867083",
  "pdf_url": "https://arxiv.org/pdf/2607.26919",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/awekffkkdj2yy.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:12Z",
      "native_id": "2607.26919",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2607.26919"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Quantum Fisher information of the Klein--Gordon and Dirac vacua",
  "title_text": "Quantum Fisher information of the Klein--Gordon and Dirac vacua",
  "type": "preprint",
  "updated_at": "2026-10-30T12:20:12Z",
  "url": "https://research.draconitic.com/paper/awekffkkdj2yy",
  "venue": "arXiv",
  "versions": []
}