{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2005:DA7NYIVFUC2KKAEBDJ6RMZSDA7","short_pith_number":"pith:DA7NYIVF","schema_version":"1.0","canonical_sha256":"183edc22a5a0b4a500811a7d16664307ddc825ea6cfb0929c9c97ffdb21ec732","source":{"kind":"arxiv","id":"physics/0510101","version":2},"attestation_state":"computed","paper":{"title":"A new determination of the fine structure constant based on Bloch oscillations of ultracold atoms in a vertical optical lattic","license":"","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":"2005-10-11T20:08:57Z","abstract_excerpt":"We report an accurate measurement of the recoil velocity of Rb atoms based on Bloch oscillations in a vertical accelerated optical lattice. We transfer about 900 recoil momenta with an efficiency of 99.97 % per recoil. A set of 72 measurements of the recoil velocity, each one with a relative uncertainty of about 33 ppb in 20 min integration time, leads to a determination of the fine structure constant alpha with a statistical relative uncertainty of 4.4 ppb. The detailed analysis of the different systematic errors yields to a relative uncertainty of 6.7 ppb. The deduced value of 1/alpha is 137"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"physics/0510101","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"physics.atom-ph","submitted_at":"2005-10-11T20:08:57Z","cross_cats_sorted":[],"title_canon_sha256":"7336dcf866eceb192061e14bb6fb98c7b41e9cc796450dbc11f1ba90b3519d60","abstract_canon_sha256":"261707a8c677016c93ae21518c961427be6686a7a86ae4c92560e37e67af9982"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:46.778087Z","signature_b64":"QSRIy6RLLmZ69NxvDBKhll8aV2TuSr7gJ8oKILI1qBa3hdvKzgFhqi636fY5ZDi3Zbs31ASaUNksiKxt5dHkCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"183edc22a5a0b4a500811a7d16664307ddc825ea6cfb0929c9c97ffdb21ec732","last_reissued_at":"2026-05-18T01:08:46.777427Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:46.777427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A new determination of the fine structure constant based on Bloch oscillations of ultracold atoms in a vertical optical lattic","license":"","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":"2005-10-11T20:08:57Z","abstract_excerpt":"We report an accurate measurement of the recoil velocity of Rb atoms based on Bloch oscillations in a vertical accelerated optical lattice. We transfer about 900 recoil momenta with an efficiency of 99.97 % per recoil. A set of 72 measurements of the recoil velocity, each one with a relative uncertainty of about 33 ppb in 20 min integration time, leads to a determination of the fine structure constant alpha with a statistical relative uncertainty of 4.4 ppb. The detailed analysis of the different systematic errors yields to a relative uncertainty of 6.7 ppb. The deduced value of 1/alpha is 137"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0510101","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"physics/0510101","created_at":"2026-05-18T01:08:46.777534+00:00"},{"alias_kind":"arxiv_version","alias_value":"physics/0510101v2","created_at":"2026-05-18T01:08:46.777534+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0510101","created_at":"2026-05-18T01:08:46.777534+00:00"},{"alias_kind":"pith_short_12","alias_value":"DA7NYIVFUC2K","created_at":"2026-05-18T12:25:53.335082+00:00"},{"alias_kind":"pith_short_16","alias_value":"DA7NYIVFUC2KKAEB","created_at":"2026-05-18T12:25:53.335082+00:00"},{"alias_kind":"pith_short_8","alias_value":"DA7NYIVF","created_at":"2026-05-18T12:25:53.335082+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/DA7NYIVFUC2KKAEBDJ6RMZSDA7","json":"https://pith.science/pith/DA7NYIVFUC2KKAEBDJ6RMZSDA7.json","graph_json":"https://pith.science/api/pith-number/DA7NYIVFUC2KKAEBDJ6RMZSDA7/graph.json","events_json":"https://pith.science/api/pith-number/DA7NYIVFUC2KKAEBDJ6RMZSDA7/events.json","paper":"https://pith.science/paper/DA7NYIVF"},"agent_actions":{"view_html":"https://pith.science/pith/DA7NYIVFUC2KKAEBDJ6RMZSDA7","download_json":"https://pith.science/pith/DA7NYIVFUC2KKAEBDJ6RMZSDA7.json","view_paper":"https://pith.science/paper/DA7NYIVF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=physics/0510101&json=true","fetch_graph":"https://pith.science/api/pith-number/DA7NYIVFUC2KKAEBDJ6RMZSDA7/graph.json","fetch_events":"https://pith.science/api/pith-number/DA7NYIVFUC2KKAEBDJ6RMZSDA7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DA7NYIVFUC2KKAEBDJ6RMZSDA7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DA7NYIVFUC2KKAEBDJ6RMZSDA7/action/storage_attestation","attest_author":"https://pith.science/pith/DA7NYIVFUC2KKAEBDJ6RMZSDA7/action/author_attestation","sign_citation":"https://pith.science/pith/DA7NYIVFUC2KKAEBDJ6RMZSDA7/action/citation_signature","submit_replication":"https://pith.science/pith/DA7NYIVFUC2KKAEBDJ6RMZSDA7/action/replication_record"}},"created_at":"2026-05-18T01:08:46.777534+00:00","updated_at":"2026-05-18T01:08:46.777534+00:00"}