{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:THG5JREAW6HGDRWJ7OVQ2YYQGH","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":"2306a65dd82456c6e7b2a32691e7e1096fef3270324d43afaf718a2d7efd0f86","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2017-04-07T17:11:56Z","title_canon_sha256":"8acb90f7f6aa44a3b001459fe761c26c9f67277292026a42ada746aab95c59c0"},"schema_version":"1.0","source":{"id":"1704.02296","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.02296","created_at":"2026-05-18T00:42:23Z"},{"alias_kind":"arxiv_version","alias_value":"1704.02296v2","created_at":"2026-05-18T00:42:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.02296","created_at":"2026-05-18T00:42:23Z"},{"alias_kind":"pith_short_12","alias_value":"THG5JREAW6HG","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"THG5JREAW6HGDRWJ","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"THG5JREA","created_at":"2026-05-18T12:31:46Z"}],"graph_snapshots":[{"event_id":"sha256:6aefd1bd095142449b3c2ae1a9f773ce02f6e4f208898a459ae538c04475f9d1","target":"graph","created_at":"2026-05-18T00:42:23Z","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":"The Einstein Equivalence Principle (EEP) has a central role in the understanding of gravity and space-time. In its weak form, or Weak Equivalence Principle (WEP), it directly implies equivalence between inertial and gravitational mass. Verifying this principle in a regime where the relevant properties of the test body must be described by quantum theory has profound implications. Here we report on a novel WEP test for atoms. A Bragg atom interferometer in a gravity gradiometer configuration compares the free fall of rubidium atoms prepared in two hyperfine states and in their coherent superpos","authors_text":"C. Brukner, F. Sorrentino, G. D'Amico, G. M. Tino, G. Rosi, L. Cacciapuoti, M. Prevedelli, M. Zych","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2017-04-07T17:11:56Z","title":"Quantum test of the equivalence principle for atoms in superpositions of internal energy eigenstates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.02296","kind":"arxiv","version":2},"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":"sha256:2c2103028c3171f204a7296dbc3582189ea3289c868d40de40fec644d22883b3","target":"record","created_at":"2026-05-18T00:42:23Z","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":"2306a65dd82456c6e7b2a32691e7e1096fef3270324d43afaf718a2d7efd0f86","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2017-04-07T17:11:56Z","title_canon_sha256":"8acb90f7f6aa44a3b001459fe761c26c9f67277292026a42ada746aab95c59c0"},"schema_version":"1.0","source":{"id":"1704.02296","kind":"arxiv","version":2}},"canonical_sha256":"99cdd4c480b78e61c6c9fbab0d631031d8fab3a87077d18cc1343117ca250932","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"99cdd4c480b78e61c6c9fbab0d631031d8fab3a87077d18cc1343117ca250932","first_computed_at":"2026-05-18T00:42:23.417976Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:42:23.417976Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"p/xr37K6JXcITVtIwA5JbuE8YFwNCN2K1yd6gvvjxwydF9PBViNcAxZuMTkCABGGDySuP5RV/AqlN2gfDKXlAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:42:23.418451Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.02296","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2c2103028c3171f204a7296dbc3582189ea3289c868d40de40fec644d22883b3","sha256:6aefd1bd095142449b3c2ae1a9f773ce02f6e4f208898a459ae538c04475f9d1"],"state_sha256":"419f4baeb2379b99ffd04ce3da9f860a42fe169898728b6cecdbc60a5f6a1281"}