{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:2GYLAJWUJT2RRXYL5SD6SGYFP5","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":"03df41009f604757f2a522c9413e7502e288b774e488109a5e37b59a1aed0d16","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2009-10-13T15:09:01Z","title_canon_sha256":"652e0d3a2470205912324ad8172323fa5a66cad86e50873892d2e2df198f50f1"},"schema_version":"1.0","source":{"id":"0910.2412","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.2412","created_at":"2026-05-18T03:23:57Z"},{"alias_kind":"arxiv_version","alias_value":"0910.2412v1","created_at":"2026-05-18T03:23:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.2412","created_at":"2026-05-18T03:23:57Z"},{"alias_kind":"pith_short_12","alias_value":"2GYLAJWUJT2R","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"2GYLAJWUJT2RRXYL","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"2GYLAJWU","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:48f1e281d6de88c90c43463a39c60bb4f416e32ef28b7b65130c0a714c3ce0f0","target":"graph","created_at":"2026-05-18T03:23:57Z","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 propose a scheme for testing the weak equivalence principle (Universality of Free Fall) using an atom-interferometric measurement of the local differential acceleration between two atomic species with a large mass ratio as test masses. A apparatus in free fall can be used to track atomic free-fall trajectories over large distances. We show how the differential acceleration can be extracted from the interferometric signal using Bayesian statistical estimation, even in the case of a large mass and laser wavelength difference. We show that this statistical estimation method does not suffer fro","authors_text":"Arnaud Landragin (SYRTE), Gael Varoquaux (LCFIO), Patrick Cheinet (LCFIO), Philippe Bouyer (LCFIO), R\\'emi Geiger (LCFIO), Robert A. Nyman (LCFIO)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2009-10-13T15:09:01Z","title":"How to estimate the differential acceleration in a two-species atom interferometer to test the equivalence principle"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.2412","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":"sha256:160e7bab1540333b203911a2285d734ad7455a66b0551e4ea4d9572094249ed1","target":"record","created_at":"2026-05-18T03:23:57Z","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":"03df41009f604757f2a522c9413e7502e288b774e488109a5e37b59a1aed0d16","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2009-10-13T15:09:01Z","title_canon_sha256":"652e0d3a2470205912324ad8172323fa5a66cad86e50873892d2e2df198f50f1"},"schema_version":"1.0","source":{"id":"0910.2412","kind":"arxiv","version":1}},"canonical_sha256":"d1b0b026d44cf518df0bec87e91b057f629d3e126d8999c7e7006871e1186501","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d1b0b026d44cf518df0bec87e91b057f629d3e126d8999c7e7006871e1186501","first_computed_at":"2026-05-18T03:23:57.280998Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:23:57.280998Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oNkidA+RegX/6UEP9PTPsOLC7MkGGqzrUn/jAbxNN9fKeaVjTdC4cDC1dK9y82oSGFqiogNPSCcez4NQqi/TCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:23:57.281648Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.2412","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:160e7bab1540333b203911a2285d734ad7455a66b0551e4ea4d9572094249ed1","sha256:48f1e281d6de88c90c43463a39c60bb4f416e32ef28b7b65130c0a714c3ce0f0"],"state_sha256":"2faffa7c06f60f28886122d2d14e06de68aa950464fee98aa058f534d15fbbaa"}