{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:RTBF2CHZHVUWWOM3QI7ZKSGEAH","short_pith_number":"pith:RTBF2CHZ","schema_version":"1.0","canonical_sha256":"8cc25d08f93d696b399b823f9548c401d9ef8bcfc62616c9ae24ee173a6591b3","source":{"kind":"arxiv","id":"1908.04146","version":3},"attestation_state":"computed","paper":{"title":"Big Bang Nucleosynthesis Hunts Chameleon Dark Matter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","gr-qc","hep-th"],"primary_cat":"hep-ph","authors_text":"Hua Chen, Shinya Matsuzaki, Taishi Katsuragawa, Taotao Qiu","submitted_at":"2019-08-12T13:43:51Z","abstract_excerpt":"We study the chameleon field dark matter, dubbed \\textit{scalaron}, in $F(R)$ gravity in the Big Bang Nucleosynthesis (BBN) epoch. With an $R^{2}$-correction term required to solve the singularity problem for $F(R)$ gravity, we first find that the scalaron dynamics is governed by the $R^{2}$ term and the chameleon mechanism in the early universe, which makes the scalaron physics model-independent regarding the low-energy scale modification. In viable $F(R)$ dark energy models including the $R^{2}$ correction, our analysis suggests the scalaron universally evolves in a way with a bouncing oscil"},"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":"1908.04146","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-08-12T13:43:51Z","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-th"],"title_canon_sha256":"f358135699e7c2c09f8744486a7970f9efdd9452a07351c4e12fdff7fbdb24c5","abstract_canon_sha256":"b6d84f8709a97649267119759233e26676c9a142544a4b49844477663f190676"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:45:43.617736Z","signature_b64":"7fhicMUJJGPVoXgUixH79gEgR7g2ZHAFwIBjbX/W3E6gLZkCUQuKwAbKbQs8Gt/T9m3JjBLiI3tzg9gDkgOTDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8cc25d08f93d696b399b823f9548c401d9ef8bcfc62616c9ae24ee173a6591b3","last_reissued_at":"2026-07-05T00:45:43.617241Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:45:43.617241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Big Bang Nucleosynthesis Hunts Chameleon Dark Matter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","gr-qc","hep-th"],"primary_cat":"hep-ph","authors_text":"Hua Chen, Shinya Matsuzaki, Taishi Katsuragawa, Taotao Qiu","submitted_at":"2019-08-12T13:43:51Z","abstract_excerpt":"We study the chameleon field dark matter, dubbed \\textit{scalaron}, in $F(R)$ gravity in the Big Bang Nucleosynthesis (BBN) epoch. With an $R^{2}$-correction term required to solve the singularity problem for $F(R)$ gravity, we first find that the scalaron dynamics is governed by the $R^{2}$ term and the chameleon mechanism in the early universe, which makes the scalaron physics model-independent regarding the low-energy scale modification. In viable $F(R)$ dark energy models including the $R^{2}$ correction, our analysis suggests the scalaron universally evolves in a way with a bouncing oscil"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.04146","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.04146/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"1908.04146","created_at":"2026-07-05T00:45:43.617300+00:00"},{"alias_kind":"arxiv_version","alias_value":"1908.04146v3","created_at":"2026-07-05T00:45:43.617300+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.04146","created_at":"2026-07-05T00:45:43.617300+00:00"},{"alias_kind":"pith_short_12","alias_value":"RTBF2CHZHVUW","created_at":"2026-07-05T00:45:43.617300+00:00"},{"alias_kind":"pith_short_16","alias_value":"RTBF2CHZHVUWWOM3","created_at":"2026-07-05T00:45:43.617300+00:00"},{"alias_kind":"pith_short_8","alias_value":"RTBF2CHZ","created_at":"2026-07-05T00:45:43.617300+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2411.17186","citing_title":"Scalar-Induced Electromagnetic Radiation: Comparison with Axion-Like Particles and Implications for Modified Gravity","ref_index":28,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/RTBF2CHZHVUWWOM3QI7ZKSGEAH","json":"https://pith.science/pith/RTBF2CHZHVUWWOM3QI7ZKSGEAH.json","graph_json":"https://pith.science/api/pith-number/RTBF2CHZHVUWWOM3QI7ZKSGEAH/graph.json","events_json":"https://pith.science/api/pith-number/RTBF2CHZHVUWWOM3QI7ZKSGEAH/events.json","paper":"https://pith.science/paper/RTBF2CHZ"},"agent_actions":{"view_html":"https://pith.science/pith/RTBF2CHZHVUWWOM3QI7ZKSGEAH","download_json":"https://pith.science/pith/RTBF2CHZHVUWWOM3QI7ZKSGEAH.json","view_paper":"https://pith.science/paper/RTBF2CHZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1908.04146&json=true","fetch_graph":"https://pith.science/api/pith-number/RTBF2CHZHVUWWOM3QI7ZKSGEAH/graph.json","fetch_events":"https://pith.science/api/pith-number/RTBF2CHZHVUWWOM3QI7ZKSGEAH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/RTBF2CHZHVUWWOM3QI7ZKSGEAH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/RTBF2CHZHVUWWOM3QI7ZKSGEAH/action/storage_attestation","attest_author":"https://pith.science/pith/RTBF2CHZHVUWWOM3QI7ZKSGEAH/action/author_attestation","sign_citation":"https://pith.science/pith/RTBF2CHZHVUWWOM3QI7ZKSGEAH/action/citation_signature","submit_replication":"https://pith.science/pith/RTBF2CHZHVUWWOM3QI7ZKSGEAH/action/replication_record"}},"created_at":"2026-07-05T00:45:43.617300+00:00","updated_at":"2026-07-05T00:45:43.617300+00:00"}