{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"1435f40e1cd3e2c6b7f83373f938dbe6c682ab2dfd8593fc47db252c272777e5","created":"2026-10-03T07:18:09Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"9a7ff9b1c9deb8b284b2ccabd83c5cf84ee43889728bfd2d47c389745d406f1b","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"proof","assisted_by":[],"external_id":"qi.causal-order-qrf.qrf-general-frames","kind":"well-posed","literature_status":"partially-resolved","n":"1","parents":[],"plain":"Describing physics from the viewpoint of a quantum particle needs rules for switching viewpoints. Several frameworks give such rules for idealized frames; for realistic frames such as small quantum clocks they disagree or are undefined.","posed_since":"","precise":"Construct transformations between quantum reference frames for arbitrary symmetry groups (including non-Abelian, e.g. SU(2) rotations) and non-ideal frames (finite-dimensional, with non-orthogonal orientation states), and prove equivalence or a precise relation between the perspective-neutral (constraint-based), operational and perspectival approaches. An answer is one framework with proofs that each existing one is a special case, or a stated inequivalence.","problem_ref":null,"references":"","settled_by":"Published theorems relating the frameworks for general groups and non-ideal frames.","status_note":"Frameworks for general groups and some non-ideal frames exist; their full equivalence is proved only for restricted classes of frames.","title":"Quantum reference frame changes for general and imperfect frames","topic_ref":"0d56bf5e6184723e4f024030c3c79a9dde6f6fca1514c152e520bdf56cfb78be"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"d479577d0dcd6ea9e5a6e044feebc44ac9f7e5d3a5457a4f588fee5c28d16851","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"7838dfc52bfe25e61cddc392bed04d90cf4b9cceeecf3bbef7e8d01f78f6c344","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"EDaExcvPzfUqfOw33cAUZogBTTlegTcL-eMswCijhj7O9lED7L37Jr0_xkYJxtM0wTc0qPLXCX8OjcwNnVBTDA"},"schema":"pubphys.envelope/1"},"record_hash":"d479577d0dcd6ea9e5a6e044feebc44ac9f7e5d3a5457a4f588fee5c28d16851","leaf_index":1966}