{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:Q562J3QDUSUBF5W2532DVMCI77","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":"03beb6ecd61a9974c0bc7a232c3d999d1cc292b7d905986b6a65c8d62efe5d7a","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-12-20T21:17:08Z","title_canon_sha256":"642257f4463a6c3b78782d3b71d7a5e366e5ad0466fe36abb612e43a88ae7984"},"schema_version":"1.0","source":{"id":"2112.10863","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.10863","created_at":"2026-07-05T04:12:37Z"},{"alias_kind":"arxiv_version","alias_value":"2112.10863v3","created_at":"2026-07-05T04:12:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.10863","created_at":"2026-07-05T04:12:37Z"},{"alias_kind":"pith_short_12","alias_value":"Q562J3QDUSUB","created_at":"2026-07-05T04:12:37Z"},{"alias_kind":"pith_short_16","alias_value":"Q562J3QDUSUBF5W2","created_at":"2026-07-05T04:12:37Z"},{"alias_kind":"pith_short_8","alias_value":"Q562J3QD","created_at":"2026-07-05T04:12:37Z"}],"graph_snapshots":[{"event_id":"sha256:1079add346be4edbd1ad883a2c6be4c69d39e71f18adac6dc1d9be1b1c800a36","target":"graph","created_at":"2026-07-05T04:12:37Z","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/2112.10863/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use Big Bang Nucleosynthesis (BBN) data in order to impose constraints on higher-order modified gravity, and in particular on: (i) $f(G)$ Gauss-Bonnet gravity, and $f(P)$ cubic gravities, arising respectively through the use of the quadratic-curvature Gauss-Bonnet $G$ term, and the cubic-curvature combination, (ii) string-inspired quadratic Gauss-Bonnet gravity coupled to the dilaton field, (iii) models with string-inspired quartic curvature corrections, and (iv) running vacuum models. We perform a detailed investigation of the BBN epoch and we calculate the deviations of the freeze-out tem","authors_text":"Emmanuel N. Saridakis, Nick E. Mavromatos, Petros Asimakis, Spyros Basilakos","cross_cats":["astro-ph.CO","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-12-20T21:17:08Z","title":"Big Bang Nucleosynthesis constraints on higher-order modified gravities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.10863","kind":"arxiv","version":3},"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":"sha256:313b115815825c60bf7dd8313a66e227c71cf1422d759b2989b5242d5877aa7a","target":"record","created_at":"2026-07-05T04:12:37Z","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":"03beb6ecd61a9974c0bc7a232c3d999d1cc292b7d905986b6a65c8d62efe5d7a","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-12-20T21:17:08Z","title_canon_sha256":"642257f4463a6c3b78782d3b71d7a5e366e5ad0466fe36abb612e43a88ae7984"},"schema_version":"1.0","source":{"id":"2112.10863","kind":"arxiv","version":3}},"canonical_sha256":"877da4ee03a4a812f6daeef43ab048ffccc9d937ab64be17c5ae0fdf513c6b58","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"877da4ee03a4a812f6daeef43ab048ffccc9d937ab64be17c5ae0fdf513c6b58","first_computed_at":"2026-07-05T04:12:37.807062Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:12:37.807062Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sImPG06vv+ubATbwrXhetSIxBOwD+jeQ2dwP7DYe4NqEmy/YZzyQh1N2qaQSOQ5M0mCvE5z2TlqbgtKu7P75AA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:12:37.807515Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.10863","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:313b115815825c60bf7dd8313a66e227c71cf1422d759b2989b5242d5877aa7a","sha256:1079add346be4edbd1ad883a2c6be4c69d39e71f18adac6dc1d9be1b1c800a36"],"state_sha256":"0b805e1c5f79c76d2a6ff85a6e698a4bfb5845ce5b1c5dde48dd345a9d18b9ed"}