{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"cd8570ba19ee1ab2e6b9eebd3ee4a0399dd73e153e7bb5baf0096b4c336c6cdc","created":"2026-10-03T07:17:49Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"ad2bdca432274fc9b2e9cc7d76f73d36b0127db8bf407644afe90c5149638199","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"amo.fine-structure-constant","field":"amo","n":"1","review_cite":"L. Morel, Z. Yao, P. Clade, S. Guellati-Khelifa, Determination of the fine-structure constant with an accuracy of 81 parts per trillion, Nature, 2020","review_link":"https://doi.org/10.1038/s41586-020-2964-7","review_verified":"true","summary":"The fine-structure constant $\\alpha$ (about $1/137$) sets the strength of electric forces, and it can be measured in several independent ways. The best measurements, made with atoms recoiling from laser light and with the magnetism of a single trapped electron, should all agree, but some do not.","title":"Fine-structure constant and electron g-2 consistency","topic_ref":null,"why":"Comparing $\\alpha$ from atom recoil with $\\alpha$ from the electron magnetic moment is the most precise test of quantum electrodynamics and of the Standard Model at low energy."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"4128c66497f0d271de4f884d65d6c0eabac35c2b12d26184409fe9547beca009","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"97f4bd1893dda8c47455c95c0934276d7c54ad20d97b1a465a175b6c4fbb5585","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"wmIPt19Mx2B6NyNzSEqWp0W3tX8VI8p7fpoPO9wjqJR_O0vM26J0EkyaHDtG3ezBBfk2tpIbAHqYfnf8fYpjCg"},"schema":"pubphys.envelope/1"},"record_hash":"4128c66497f0d271de4f884d65d6c0eabac35c2b12d26184409fe9547beca009","leaf_index":12}