{
  "abstract": "Inelastic scattering from $N$ coherent spins, or any two-state system, scales as $N^2$, invalidating the Born approximation at large $N$ even at weak coupling. We develop a nonperturbative theory of this superradiant scattering and its backreaction on the spins. Since one particle can exchange many quanta, the target's energy-transfer and energy-variance rates keep their favorable $N^2$ scaling even after the cross section saturates, unless a conservation law limits each encounter to exchange of one quantum. We apply the theory to millicharged-particle searches, as well as neutron and charged-particle beams that can test quantum protocols for detecting cosmic relics.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.38690",
  "author_total": 4,
  "authors": [
    {
      "name": "Asimina Arvanitaki"
    },
    {
      "name": "Savas Dimopoulos"
    },
    {
      "name": "Marios Galanis"
    },
    {
      "name": "Derek J. Li"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2xd211w7h86f0.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.38690",
  "fulltext_url": null,
  "id": "2xd211w7h86f0",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.38690",
  "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",
      "hep-ph"
    ],
    [
      "arxiv",
      "hep-th"
    ],
    [
      "arxiv",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.38690",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2xd211w7h86f0.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:23Z",
      "native_id": "2610.38690",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.38690"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Quantum Observables of Nonperturbative Superradiant Scattering",
  "title_text": "Quantum Observables of Nonperturbative Superradiant Scattering",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:45Z",
  "url": "https://research.draconitic.com/paper/2xd211w7h86f0",
  "venue": "arXiv",
  "versions": []
}