{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:E7B6WHZIV3OWQWNEY5FUZXQ45F","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":"aa77c0b83fafae15ca80aa0f88b47885b0083eaa3eecd5d9b8f40e2d6e2567c7","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-03-02T16:18:22Z","title_canon_sha256":"e189957531441b37d1f88b2a84484da3b7738820beea4764ccb95b3f71447f15"},"schema_version":"1.0","source":{"id":"2103.01832","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.01832","created_at":"2026-07-05T02:55:41Z"},{"alias_kind":"arxiv_version","alias_value":"2103.01832v1","created_at":"2026-07-05T02:55:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.01832","created_at":"2026-07-05T02:55:41Z"},{"alias_kind":"pith_short_12","alias_value":"E7B6WHZIV3OW","created_at":"2026-07-05T02:55:41Z"},{"alias_kind":"pith_short_16","alias_value":"E7B6WHZIV3OWQWNE","created_at":"2026-07-05T02:55:41Z"},{"alias_kind":"pith_short_8","alias_value":"E7B6WHZI","created_at":"2026-07-05T02:55:41Z"}],"graph_snapshots":[{"event_id":"sha256:e995ca4bdec69ea6f1772938ca93ea2617b3fa3d318edfb0fdd656a66401f85c","target":"graph","created_at":"2026-07-05T02:55:41Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2103.01832/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Inhomogeneous big bang nucleosynthesis (BBN) produces a spatially inhomogeneous distribution of element abundances at $T \\sim 10^9$ K, but subsequent element diffusion will tend to erase these inhomogeneities. We calculate the cosmological comoving diffusion length for the BBN elements. This diffusion length is limited by atomic scattering and is therefore dominated by diffusion when the atoms are neutral, between the redshifts of recombination and reionization. We find that the comoving diffusion length today is $d_{com} \\approx 70$ pc for all of the elements of interest except $^7$Li, for wh","authors_text":"Robert J. Scherrer","cross_cats":["gr-qc","hep-ph"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-03-02T16:18:22Z","title":"Does inhomogeneous big bang nucleosynthesis produce an inhomogeneous element distribution today?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.01832","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":"sha256:2355766fdc27131085b261e04b050cce699c21ddafc6e2f7cf8d3344771ac02d","target":"record","created_at":"2026-07-05T02:55:41Z","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":"aa77c0b83fafae15ca80aa0f88b47885b0083eaa3eecd5d9b8f40e2d6e2567c7","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-03-02T16:18:22Z","title_canon_sha256":"e189957531441b37d1f88b2a84484da3b7738820beea4764ccb95b3f71447f15"},"schema_version":"1.0","source":{"id":"2103.01832","kind":"arxiv","version":1}},"canonical_sha256":"27c3eb1f28aedd6859a4c74b4cde1ce97d9c61f0127b616c2455fa4f540a35b2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"27c3eb1f28aedd6859a4c74b4cde1ce97d9c61f0127b616c2455fa4f540a35b2","first_computed_at":"2026-07-05T02:55:41.352999Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:55:41.352999Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9J8urF9pcziqeLBvcMlPwt3vJXZk05dApsjpqMuRU2X9UUjz0R7vBxGfBXhEp/jy+Jyr3ZlGp55gqBpVTUrYAg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:55:41.353374Z","signed_message":"canonical_sha256_bytes"},"source_id":"2103.01832","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2355766fdc27131085b261e04b050cce699c21ddafc6e2f7cf8d3344771ac02d","sha256:e995ca4bdec69ea6f1772938ca93ea2617b3fa3d318edfb0fdd656a66401f85c"],"state_sha256":"5edf718136af385c27063bcb31d3a97c34ef4d05d27e641d016223bdb6e8b7de"}