{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"02e9336316f4dfcccf38b436057c4408cd4feae354f061d70be73913cb19a1d5","created":"2026-10-03T07:18:09Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011","c1f790f8de35d3d5f60c9a6639d7ec2e82b87f301b7e81cc6890231b220c7bef"],"salt":"0753a448585445a916b93e5846eddfddaf908077a2be1f66af2e47da2aa23647","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"classification","assisted_by":[],"external_id":"qi.gravity-quantum.gme-interpretation","kind":"well-posed","literature_status":"contested","n":"1","parents":[{"note":"","parent_revision":"c1f790f8de35d3d5f60c9a6639d7ec2e82b87f301b7e81cc6890231b220c7bef","relation":"special_case"}],"plain":"The standard argument says a classical go-between cannot create entanglement, so seeing it would prove gravity quantum. A 2025 paper argues that classical gravity acting on quantum matter fields can still create some entanglement through virtual matter particles (short-lived intermediate states), so the inference is disputed.","posed_since":"2017","precise":"The LOCC argument (local operations and classical communication cannot create entanglement) assumes the gravitational mediator acts as a classical channel. Determine under which explicit assumptions (locality, field-theoretic matter, linearity) observed entanglement at the rate $\\phi = G m^2 t/(\\hbar d)$ excludes classical gravity, and compute the entanglement producible by semiclassical or stochastic classical gravity coupled to quantum-field matter, which Aziz and Howl find enters at higher order in G and grows with mass toward the Planck mass (about 2e-5 g).","problem_ref":null,"references":"","settled_by":"A theorem stating which classes of classical gravity models a given entanglement measurement excludes, with parameter regimes where classical contributions are provably negligible.","status_note":"Aziz and Howl (Nature 2025, arXiv:2510.19714) argued that classical gravity with quantum-field matter produces entanglement, reopening the interpretation of the proposed experiments.","title":"Does gravity-mediated entanglement prove the gravitational field is quantum?","topic_ref":"101461c166891c74d153ef2ee42bdf128bf11de35d6dfcf854295b5e7dfab008"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"56cc7ade31462e333366da49a13d6111cdce10c8b6d453b2ea010ab5092006ce","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"3f318928c0926cd0fafb133dd47c0cf76d39773073c4a33e8c24b1c66a79b93a","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"msCJ54gW9CgibRuz212SYraO47rGnhwCntqvGvsY19hhfvpqstTr_zQHnFp-73tluPnJ4Su1N_84BegNEy69DQ"},"schema":"pubphys.envelope/1"},"record_hash":"56cc7ade31462e333366da49a13d6111cdce10c8b6d453b2ea010ab5092006ce","leaf_index":1999}