{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:67MDUXCH35N6PZMLMF6FCN634R","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":"fdf069784ca77e67d2a8aa907dbd9bf8263d1eb3bbd9705be581b53a2ff7f918","cross_cats_sorted":["gr-qc","hep-th"],"license":"","primary_cat":"astro-ph","submitted_at":"2002-02-12T15:05:15Z","title_canon_sha256":"c2372206c8996a44d8a8a25c937bfe22e1c4dc4901e13f4ef2db4cdf1780463c"},"schema_version":"1.0","source":{"id":"astro-ph/0202224","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0202224","created_at":"2026-05-18T04:33:05Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0202224v4","created_at":"2026-05-18T04:33:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0202224","created_at":"2026-05-18T04:33:05Z"},{"alias_kind":"pith_short_12","alias_value":"67MDUXCH35N6","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"67MDUXCH35N6PZML","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"67MDUXCH","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:168733c3903f3b2e1c2cf99ce9d48a6c81106e915e9b9e690e35785604b565f5","target":"graph","created_at":"2026-05-18T04:33:05Z","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":"A phenomenological model is proposed to explain the recent observed cosmological variation of the fine structure constant as an effect of the quantum vacuum, assuming a flat universe with cosmological constant $\\Lambda$ in the cases ($\\Omega_M, \\Omega_\\Lambda$) equal to (0.3,0.7) and (1,0). Because of the fourth Heisenberg relation, the lifetime of the virtual pairs of the zero-point radiation must depend on the gravitational potential, so that the quantum vacuum changes its density and acquires a relative permittivity different from one. Since the matter was more concentrated in the past, the","authors_text":"Antonio F. Ra\\~nada","cross_cats":["gr-qc","hep-th"],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-02-12T15:05:15Z","title":"On the cosmological variation of the fine structure constant"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0202224","kind":"arxiv","version":4},"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":"sha256:2e394bbab2e41be96f20a70b9527dfc916c92140f292d10024e5641553c968cd","target":"record","created_at":"2026-05-18T04:33:05Z","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":"fdf069784ca77e67d2a8aa907dbd9bf8263d1eb3bbd9705be581b53a2ff7f918","cross_cats_sorted":["gr-qc","hep-th"],"license":"","primary_cat":"astro-ph","submitted_at":"2002-02-12T15:05:15Z","title_canon_sha256":"c2372206c8996a44d8a8a25c937bfe22e1c4dc4901e13f4ef2db4cdf1780463c"},"schema_version":"1.0","source":{"id":"astro-ph/0202224","kind":"arxiv","version":4}},"canonical_sha256":"f7d83a5c47df5be7e58b617c5137dbe471ff4cd7f6503fb08ebe37bef54a5685","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f7d83a5c47df5be7e58b617c5137dbe471ff4cd7f6503fb08ebe37bef54a5685","first_computed_at":"2026-05-18T04:33:05.678016Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:33:05.678016Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uw39ZMbFDtUatsg/ONiXjUF4FRvi//A33eMxn3EIUpWKfItKdDVixX7SV44MdOoPNVqNvCC6yzfpmjx6t9moDA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:33:05.678881Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0202224","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e394bbab2e41be96f20a70b9527dfc916c92140f292d10024e5641553c968cd","sha256:168733c3903f3b2e1c2cf99ce9d48a6c81106e915e9b9e690e35785604b565f5"],"state_sha256":"afcbb569e96fe070abd01e4076a20c25d5acdaa453422e0bec1ac97637231eee"}