{
  "abstract": "We ask whether Kochen-Specker contextuality is Lorentz invariant. On the full Hilbert space, it is, since boosts act unitarily. Restricted to spin, it is not: momentum acts as an environment applying momentum-dependent Wigner rotations, leaving spin observables unsharp and breaking the operator identities behind state-independent contextuality. For spin $1/2$ one scalar governs the loss, the packet average $Δ$ of $\\sin^2(θ_W/2)$ (where $θ_W$ is the Wigner angle); for any spin, a ray degrades at a rate set by its spin variance transverse to the boost. In the spin-only account, the Free Will Theorem's SPIN axiom fails for every $Δ>0$; the Yu-Oh set loses contextuality between $Δ\\approx0.008$ and $0.016$, with state independence going first; the Peres-Mermin square loses contextuality at $Δ\\approx0.059$ or $0.074$ by orientation; singlet CHSH loses nonlocality for $Δ\\geq0.159$; and a GHZ-state OR gate loses Raussendorf's contextuality certificate at $Δ\\approx0.206$. A $q$-plate implements the channel exactly on photon polarisation, with a retardation in place of the rapidity, so the nonlocality, GHZ and aimed-source results are testable without motion.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.00274",
  "author_total": 2,
  "authors": [
    {
      "name": "Jonte R. Hance"
    },
    {
      "name": "Ruben Campos Delgado"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/22xn89xckgnph.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.00274",
  "fulltext_url": null,
  "id": "22xn89xckgnph",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.00274",
  "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",
      "physics.optics"
    ],
    [
      "arxiv",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.00274",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/22xn89xckgnph.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:26:03Z",
      "native_id": "2610.00274",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.00274"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Frame dependence of Kochen-Specker contextuality for relativistic spin systems",
  "title_text": "Frame dependence of Kochen-Specker contextuality for relativistic spin systems",
  "type": "preprint",
  "updated_at": "2026-10-30T12:26:03Z",
  "url": "https://research.draconitic.com/paper/22xn89xckgnph",
  "venue": "arXiv",
  "versions": []
}