{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"505ae764bcc3596377e9eac62ee43b0ffcec3ce3822820cfee09d938c5a9a5de","created":"2026-10-15T23:43:22Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["56cc7ade31462e333366da49a13d6111cdce10c8b6d453b2ea010ab5092006ce","ce59fb6cd812fc05906d0c60a71c75ea22bc686bcf38e7c3ef7010834d98ee7b"],"salt":"d51574ab1229f174aa9483f376fc86f0b831a5db4703c7cbf8fbc5d133b9ff71","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":"2","parents":[],"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 $2 \\times 10^{-5}$ g).","problem_ref":"56cc7ade31462e333366da49a13d6111cdce10c8b6d453b2ea010ab5092006ce","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":null},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"a613646df970f107c4a2cb7ed8e40324196885d555a782465c62a98938308419","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"01fd0fd00d45fa1eee4b29c9c0513f34adfec790605659b6b579b5d4f7c82878","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"zKkLVNmMR9SZ4KP0jX-FWyh4u3_B-0hOKqD2XfnvVvKhYw8I4KgnLj_ElSFMKbhPM3J-_VuH_ehIKXez-DRXCg"},"schema":"pubphys.envelope/1"},"record_hash":"a613646df970f107c4a2cb7ed8e40324196885d555a782465c62a98938308419","leaf_index":3714}