{
  "abstract": "We present a compact all-multiplicity formula for tree-level late-time wavefunction coefficients of scalar QED in four-dimensional de Sitter space, with a conformally coupled charged scalar pair and positive-helicity photons. The result admits both a recursive representation in terms of shifted lower-point coefficients and an explicit finite sum involving only kinematic factors. The flat-space amplitudes vanish for two or more photons, yet the de Sitter coefficients remain nonzero. These zeros enforce cancellations of the total-energy residue and, through factorization, of proper partial-energy residues involving multi-photon subamplitudes. Using a common-reference construction, we derive an exact lower-point recursion from Abelian Ward identities. Conformal symmetry provides an independent check: the partition sum solves the inhomogeneous Ward identity, while the total-energy term is a homogeneous solution. We also outline an analogous recursion in massless fermionic QED.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.29356",
  "author_total": 3,
  "authors": [
    {
      "name": "Song He"
    },
    {
      "name": "Jiajie Mei"
    },
    {
      "name": "Yuyu Mo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5p4h2wz8eax67.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.29356",
  "fulltext_url": null,
  "id": "5p4h2wz8eax67",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.29356",
  "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"
    ],
    [
      "openalex",
      "3106|Black Holes and Theoretical Physics"
    ]
  ],
  "openalex": "W7214365531",
  "pdf_url": "https://arxiv.org/pdf/2609.29356",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5p4h2wz8eax67.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:11Z",
      "native_id": "2609.29356",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.29356"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "All-Plus QED Wavefunctions in de Sitter Space",
  "title_text": "All-Plus QED Wavefunctions in de Sitter Space",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:11Z",
  "url": "https://research.draconitic.com/paper/5p4h2wz8eax67",
  "venue": "arXiv",
  "versions": []
}