{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"160898ed19450952aed3d3492c7c8aa91dd072ebbebe0ab40142a37bad00f69d","created":"2026-10-03T07:17:52Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"8bcd42756cca7b8c66755bbb8111e5f4f3c9259684954c9a9e45b157459501da","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"qi.measurement-problem","field":"qi","n":"1","review_cite":"Schlosshauer, Decoherence, the measurement problem, and interpretations of quantum mechanics, Reviews of Modern Physics, 2004","review_link":"https://doi.org/10.1103/RevModPhys.76.1267","review_verified":"true","summary":"Quantum theory says an unobserved system evolves smoothly into a blend of possibilities, yet every measurement shows exactly one result, with a probability equal to a squared amplitude. There is no agreement on how the single result arises or why the probabilities take that form.","title":"Measurement problem and the Born rule","topic_ref":null,"why":"Every use of quantum theory relies on a measurement rule that the theory's own equation of motion does not explain."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"53eaac23eff60d38a9fc30e8fae69f8801e09051272e1b1d322d1c034216f53b","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"f5c9fbc9e82de07889f3cf7ae2fbfcc50e8da9a3e0467100126d477fb5bd4cfa","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"DgGWAZyLpX4RtHDXCeAsgGrQw6BfDnlXFOEexD3fz23Uo4FRLWsRbcnX1kXnTfNEj2er-8MTPMU9AVO6U5CuDQ"},"schema":"pubphys.envelope/1"},"record_hash":"53eaac23eff60d38a9fc30e8fae69f8801e09051272e1b1d322d1c034216f53b","leaf_index":337}