{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:PLFIF7LQ253VFUBPER5X4SV3E5","short_pith_number":"pith:PLFIF7LQ","schema_version":"1.0","canonical_sha256":"7aca82fd70d77752d02f247b7e4abb276cadb97acf66b0c64c0f01e5712fd23d","source":{"kind":"arxiv","id":"1510.00866","version":1},"attestation_state":"computed","paper":{"title":"Quantum ballistic experiment on antihydrogen fall","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"A. Yu. Voronin, G. Dufour, S. Reynaud, V.V. Nesvizhevsky","submitted_at":"2015-10-03T20:49:44Z","abstract_excerpt":"We study an interferometric approach to measure gravitational mass of antihydrogen. The method consists of preparing a coherent superposition of antihydrogen quantum state localized near a material surface in the gravitational field of the Earth, and then observing the time distribution of annihilation events followed after the free fall of an initially prepared superposition from a given height to the detector plate. We show that a corresponding time distribution is related to the momentum distribution in the initial state that allows its precise measurement. This approach is combined with a "},"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":"1510.00866","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2015-10-03T20:49:44Z","cross_cats_sorted":[],"title_canon_sha256":"cd995fe2ef07d692af814c527dd3148b55398d59da90c8b3007e2f98608b4aa6","abstract_canon_sha256":"6c7f7bb6bc107b81526c81a646966c97ebd23ef819a6f3107d9444601a342709"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:31.561553Z","signature_b64":"hhJ1B+j0JT/yQLdfTaQFpv4xoz27b8GTDe3gUxZDMchO65XuzcavozkGzUtiHkQARfdqn+f4J7YEQG1KtjkkBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7aca82fd70d77752d02f247b7e4abb276cadb97acf66b0c64c0f01e5712fd23d","last_reissued_at":"2026-05-18T00:32:31.560853Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:31.560853Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quantum ballistic experiment on antihydrogen fall","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"A. Yu. Voronin, G. Dufour, S. Reynaud, V.V. Nesvizhevsky","submitted_at":"2015-10-03T20:49:44Z","abstract_excerpt":"We study an interferometric approach to measure gravitational mass of antihydrogen. The method consists of preparing a coherent superposition of antihydrogen quantum state localized near a material surface in the gravitational field of the Earth, and then observing the time distribution of annihilation events followed after the free fall of an initially prepared superposition from a given height to the detector plate. We show that a corresponding time distribution is related to the momentum distribution in the initial state that allows its precise measurement. This approach is combined with a "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.00866","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1510.00866","created_at":"2026-05-18T00:32:31.560966+00:00"},{"alias_kind":"arxiv_version","alias_value":"1510.00866v1","created_at":"2026-05-18T00:32:31.560966+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.00866","created_at":"2026-05-18T00:32:31.560966+00:00"},{"alias_kind":"pith_short_12","alias_value":"PLFIF7LQ253V","created_at":"2026-05-18T12:29:37.295048+00:00"},{"alias_kind":"pith_short_16","alias_value":"PLFIF7LQ253VFUBP","created_at":"2026-05-18T12:29:37.295048+00:00"},{"alias_kind":"pith_short_8","alias_value":"PLFIF7LQ","created_at":"2026-05-18T12:29:37.295048+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/PLFIF7LQ253VFUBPER5X4SV3E5","json":"https://pith.science/pith/PLFIF7LQ253VFUBPER5X4SV3E5.json","graph_json":"https://pith.science/api/pith-number/PLFIF7LQ253VFUBPER5X4SV3E5/graph.json","events_json":"https://pith.science/api/pith-number/PLFIF7LQ253VFUBPER5X4SV3E5/events.json","paper":"https://pith.science/paper/PLFIF7LQ"},"agent_actions":{"view_html":"https://pith.science/pith/PLFIF7LQ253VFUBPER5X4SV3E5","download_json":"https://pith.science/pith/PLFIF7LQ253VFUBPER5X4SV3E5.json","view_paper":"https://pith.science/paper/PLFIF7LQ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1510.00866&json=true","fetch_graph":"https://pith.science/api/pith-number/PLFIF7LQ253VFUBPER5X4SV3E5/graph.json","fetch_events":"https://pith.science/api/pith-number/PLFIF7LQ253VFUBPER5X4SV3E5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PLFIF7LQ253VFUBPER5X4SV3E5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PLFIF7LQ253VFUBPER5X4SV3E5/action/storage_attestation","attest_author":"https://pith.science/pith/PLFIF7LQ253VFUBPER5X4SV3E5/action/author_attestation","sign_citation":"https://pith.science/pith/PLFIF7LQ253VFUBPER5X4SV3E5/action/citation_signature","submit_replication":"https://pith.science/pith/PLFIF7LQ253VFUBPER5X4SV3E5/action/replication_record"}},"created_at":"2026-05-18T00:32:31.560966+00:00","updated_at":"2026-05-18T00:32:31.560966+00:00"}