{"paper":{"title":"Determination of the fine structure constant with atom interferometry and Bloch oscillations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Catherine Schwob (LKB - Jussieu), Estefania De Mirandes (LKB - Jussieu), Fran\\c{c}ois Biraben (LKB - Jussieu), Fran\\c{c}ois Nez (LKB - Jussieu), Lucile Julien (LKB - Jussieu), Malo Cadoret (LKB - Jussieu), Pierre Clad\\'e (LKB - Jussieu), Sa\\\"ida Guellati-Kh\\'elifa (BNM-INM)","submitted_at":"2008-12-16T20:17:52Z","abstract_excerpt":"We use Bloch oscillations to transfer coherently many photon momenta to atoms. Then we can measure accurately the recoil velocity $\\hbar k/m$ and deduce the fine structure constant $\\alpha$. The velocity variation due to Bloch oscillations is measured using atom interferometry. This method yields to a value of the fine structure constant $\\alpha^{-1}= 137.035 999 45 (62)$ with a relative uncertainty of about $4.5 \\times 10^{-9}$."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.3139","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}