{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:GYBEA26OAA6XEVM3CX7AZUVSWE","short_pith_number":"pith:GYBEA26O","canonical_record":{"source":{"id":"0812.3139","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2008-12-16T20:17:52Z","cross_cats_sorted":[],"title_canon_sha256":"5471be02bb8732f8ec40b9713ef1a05e05affca70974dd7e22b3e5a2b23eeb3b","abstract_canon_sha256":"82d2898291b49a5a8abbfd4d98df3a688f6d4a0cfe854c5367a28d1d5e923bfe"},"schema_version":"1.0"},"canonical_sha256":"3602406bce003d72559b15fe0cd2b2b12b46a9a6777cf4e06bcd8d6dca4856b9","source":{"kind":"arxiv","id":"0812.3139","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.3139","created_at":"2026-05-18T00:37:05Z"},{"alias_kind":"arxiv_version","alias_value":"0812.3139v1","created_at":"2026-05-18T00:37:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.3139","created_at":"2026-05-18T00:37:05Z"},{"alias_kind":"pith_short_12","alias_value":"GYBEA26OAA6X","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"GYBEA26OAA6XEVM3","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"GYBEA26O","created_at":"2026-05-18T12:25:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:GYBEA26OAA6XEVM3CX7AZUVSWE","target":"record","payload":{"canonical_record":{"source":{"id":"0812.3139","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2008-12-16T20:17:52Z","cross_cats_sorted":[],"title_canon_sha256":"5471be02bb8732f8ec40b9713ef1a05e05affca70974dd7e22b3e5a2b23eeb3b","abstract_canon_sha256":"82d2898291b49a5a8abbfd4d98df3a688f6d4a0cfe854c5367a28d1d5e923bfe"},"schema_version":"1.0"},"canonical_sha256":"3602406bce003d72559b15fe0cd2b2b12b46a9a6777cf4e06bcd8d6dca4856b9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:37:05.953640Z","signature_b64":"e/0ipY2RvkmxlTjPlOvUUJE4SRI+/oMrKO/IJDB7y0vT7kBMFFbZXpJe1zm09fX+2qS/Xz3J6Bln2dspla8KDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3602406bce003d72559b15fe0cd2b2b12b46a9a6777cf4e06bcd8d6dca4856b9","last_reissued_at":"2026-05-18T00:37:05.953199Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:37:05.953199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0812.3139","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:37:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AJaI9slQc0gaKfPGl0oHQNGNQ14O2/7fIWJ2MqVUvb3cU2EStCjv/WWoWKPRI76Gjji3fKNG1O1Vrhv/aIL/Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-21T23:09:48.619588Z"},"content_sha256":"dc4f4a09f321c51ddbf47f65aeb8277dd80bec1ecf5ed23516014bed896048e3","schema_version":"1.0","event_id":"sha256:dc4f4a09f321c51ddbf47f65aeb8277dd80bec1ecf5ed23516014bed896048e3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:GYBEA26OAA6XEVM3CX7AZUVSWE","target":"graph","payload":{"graph_snapshot":{"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:37:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tg2AUQ/7nawnr5iRCQSnU8tYimI/i8OYzDTlyByzwN/CKARR/oAmHO9lhgH3MJg7eIj64omoD2YcyXLVjFcbDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-21T23:09:48.619942Z"},"content_sha256":"cce13cf0197b1dad59b4eef4af92a4080f9b06df1ba9ef1cbeb8a595c088ee5a","schema_version":"1.0","event_id":"sha256:cce13cf0197b1dad59b4eef4af92a4080f9b06df1ba9ef1cbeb8a595c088ee5a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GYBEA26OAA6XEVM3CX7AZUVSWE/bundle.json","state_url":"https://pith.science/pith/GYBEA26OAA6XEVM3CX7AZUVSWE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GYBEA26OAA6XEVM3CX7AZUVSWE/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-21T23:09:48Z","links":{"resolver":"https://pith.science/pith/GYBEA26OAA6XEVM3CX7AZUVSWE","bundle":"https://pith.science/pith/GYBEA26OAA6XEVM3CX7AZUVSWE/bundle.json","state":"https://pith.science/pith/GYBEA26OAA6XEVM3CX7AZUVSWE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GYBEA26OAA6XEVM3CX7AZUVSWE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:GYBEA26OAA6XEVM3CX7AZUVSWE","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"82d2898291b49a5a8abbfd4d98df3a688f6d4a0cfe854c5367a28d1d5e923bfe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2008-12-16T20:17:52Z","title_canon_sha256":"5471be02bb8732f8ec40b9713ef1a05e05affca70974dd7e22b3e5a2b23eeb3b"},"schema_version":"1.0","source":{"id":"0812.3139","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.3139","created_at":"2026-05-18T00:37:05Z"},{"alias_kind":"arxiv_version","alias_value":"0812.3139v1","created_at":"2026-05-18T00:37:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.3139","created_at":"2026-05-18T00:37:05Z"},{"alias_kind":"pith_short_12","alias_value":"GYBEA26OAA6X","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"GYBEA26OAA6XEVM3","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"GYBEA26O","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:cce13cf0197b1dad59b4eef4af92a4080f9b06df1ba9ef1cbeb8a595c088ee5a","target":"graph","created_at":"2026-05-18T00:37:05Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"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 $4.5 \\times 10^{-9}$.","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)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2008-12-16T20:17:52Z","title":"Determination of the fine structure constant with atom interferometry and Bloch oscillations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.3139","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:dc4f4a09f321c51ddbf47f65aeb8277dd80bec1ecf5ed23516014bed896048e3","target":"record","created_at":"2026-05-18T00:37:05Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"82d2898291b49a5a8abbfd4d98df3a688f6d4a0cfe854c5367a28d1d5e923bfe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2008-12-16T20:17:52Z","title_canon_sha256":"5471be02bb8732f8ec40b9713ef1a05e05affca70974dd7e22b3e5a2b23eeb3b"},"schema_version":"1.0","source":{"id":"0812.3139","kind":"arxiv","version":1}},"canonical_sha256":"3602406bce003d72559b15fe0cd2b2b12b46a9a6777cf4e06bcd8d6dca4856b9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3602406bce003d72559b15fe0cd2b2b12b46a9a6777cf4e06bcd8d6dca4856b9","first_computed_at":"2026-05-18T00:37:05.953199Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:37:05.953199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"e/0ipY2RvkmxlTjPlOvUUJE4SRI+/oMrKO/IJDB7y0vT7kBMFFbZXpJe1zm09fX+2qS/Xz3J6Bln2dspla8KDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:37:05.953640Z","signed_message":"canonical_sha256_bytes"},"source_id":"0812.3139","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dc4f4a09f321c51ddbf47f65aeb8277dd80bec1ecf5ed23516014bed896048e3","sha256:cce13cf0197b1dad59b4eef4af92a4080f9b06df1ba9ef1cbeb8a595c088ee5a"],"state_sha256":"1b62c9b9f7ee7c93da14d73d064533acb06485c637c93ce6d17aad3176e95555"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8yd0S2VYynA1aLylUmAcmjWb4oFzwiZZKw51rmz7lJd+OY0c5eGd+91EnakMmYmlf2NMZvbWVps1pfr/FJk6DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-21T23:09:48.621858Z","bundle_sha256":"8e120f671a6fb6d3fbb51ad26504a47381cb292a665ab5507e27e890e71e278b"}}