{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:FKUNZNBJD6AZVADOUEWG6DZG77","short_pith_number":"pith:FKUNZNBJ","schema_version":"1.0","canonical_sha256":"2aa8dcb4291f819a806ea12c6f0f26fffb4a7dff8f8c87f47af6c6bb9e25db29","source":{"kind":"arxiv","id":"1803.02383","version":2},"attestation_state":"computed","paper":{"title":"Constraining Density Fluctuations with Big Bang Nucleosynthesis in the Era of Precision Cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"John D. Barrow, Robert J. Scherrer","submitted_at":"2018-03-06T19:09:35Z","abstract_excerpt":"We reexamine big bang nucleosynthesis with large-scale baryon density inhomogeneities when the length scale of the density fluctuations exceeds the neutron diffusion length ($\\sim 10^7-10^8$ cm at BBN), and the amplitude of the fluctuations is sufficiently small to prevent gravitational collapse. In this limit, the final light element abundances can be determined by simply mixing the abundances from regions with different baryon/photon ratios without interactions. We examine gaussian, lognormal, and gamma distributions for the baryon/photon ratio, $\\eta $. We find that the deuterium and lithiu"},"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":"1803.02383","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-03-06T19:09:35Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"58cc5cee1cb43144d29bac5dd7d53c44d551e5c6c0ab40e9bf560240c34c1349","abstract_canon_sha256":"53f8f81c67efc60906293f01172ce0260991a3a3e3b83f7b279eab93e7532404"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:06:04.894719Z","signature_b64":"IV7bvN/CbdrMwuTrcELQUVqlA4HWshRMUKSg/U4rSj55YffjUdHa6OpacB2mgv6qvrv0Oq/xd1UCQs7mOVl/Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2aa8dcb4291f819a806ea12c6f0f26fffb4a7dff8f8c87f47af6c6bb9e25db29","last_reissued_at":"2026-05-18T00:06:04.894265Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:06:04.894265Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Constraining Density Fluctuations with Big Bang Nucleosynthesis in the Era of Precision Cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"John D. Barrow, Robert J. Scherrer","submitted_at":"2018-03-06T19:09:35Z","abstract_excerpt":"We reexamine big bang nucleosynthesis with large-scale baryon density inhomogeneities when the length scale of the density fluctuations exceeds the neutron diffusion length ($\\sim 10^7-10^8$ cm at BBN), and the amplitude of the fluctuations is sufficiently small to prevent gravitational collapse. In this limit, the final light element abundances can be determined by simply mixing the abundances from regions with different baryon/photon ratios without interactions. We examine gaussian, lognormal, and gamma distributions for the baryon/photon ratio, $\\eta $. We find that the deuterium and lithiu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.02383","kind":"arxiv","version":2},"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":"1803.02383","created_at":"2026-05-18T00:06:04.894347+00:00"},{"alias_kind":"arxiv_version","alias_value":"1803.02383v2","created_at":"2026-05-18T00:06:04.894347+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.02383","created_at":"2026-05-18T00:06:04.894347+00:00"},{"alias_kind":"pith_short_12","alias_value":"FKUNZNBJD6AZ","created_at":"2026-05-18T12:32:22.470017+00:00"},{"alias_kind":"pith_short_16","alias_value":"FKUNZNBJD6AZVADO","created_at":"2026-05-18T12:32:22.470017+00:00"},{"alias_kind":"pith_short_8","alias_value":"FKUNZNBJ","created_at":"2026-05-18T12:32:22.470017+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2505.15904","citing_title":"The Bearable Inhomogeneity of the Baryon Asymmetry","ref_index":27,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/FKUNZNBJD6AZVADOUEWG6DZG77","json":"https://pith.science/pith/FKUNZNBJD6AZVADOUEWG6DZG77.json","graph_json":"https://pith.science/api/pith-number/FKUNZNBJD6AZVADOUEWG6DZG77/graph.json","events_json":"https://pith.science/api/pith-number/FKUNZNBJD6AZVADOUEWG6DZG77/events.json","paper":"https://pith.science/paper/FKUNZNBJ"},"agent_actions":{"view_html":"https://pith.science/pith/FKUNZNBJD6AZVADOUEWG6DZG77","download_json":"https://pith.science/pith/FKUNZNBJD6AZVADOUEWG6DZG77.json","view_paper":"https://pith.science/paper/FKUNZNBJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1803.02383&json=true","fetch_graph":"https://pith.science/api/pith-number/FKUNZNBJD6AZVADOUEWG6DZG77/graph.json","fetch_events":"https://pith.science/api/pith-number/FKUNZNBJD6AZVADOUEWG6DZG77/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FKUNZNBJD6AZVADOUEWG6DZG77/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FKUNZNBJD6AZVADOUEWG6DZG77/action/storage_attestation","attest_author":"https://pith.science/pith/FKUNZNBJD6AZVADOUEWG6DZG77/action/author_attestation","sign_citation":"https://pith.science/pith/FKUNZNBJD6AZVADOUEWG6DZG77/action/citation_signature","submit_replication":"https://pith.science/pith/FKUNZNBJD6AZVADOUEWG6DZG77/action/replication_record"}},"created_at":"2026-05-18T00:06:04.894347+00:00","updated_at":"2026-05-18T00:06:04.894347+00:00"}