{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:NT7UXWSGNG2R5J4YRI5GVDXCN4","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":"4157930aca5781fd28fbd3c87097a81977e28c34f07cae25ce7cde0e571dd028","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2023-08-18T14:43:32Z","title_canon_sha256":"4945798222054a48bd804d897d9d816414047b7e6752410f432397c9ccf8b8d1"},"schema_version":"1.0","source":{"id":"2308.11770","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.11770","created_at":"2026-07-05T06:43:54Z"},{"alias_kind":"arxiv_version","alias_value":"2308.11770v1","created_at":"2026-07-05T06:43:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.11770","created_at":"2026-07-05T06:43:54Z"},{"alias_kind":"pith_short_12","alias_value":"NT7UXWSGNG2R","created_at":"2026-07-05T06:43:54Z"},{"alias_kind":"pith_short_16","alias_value":"NT7UXWSGNG2R5J4Y","created_at":"2026-07-05T06:43:54Z"},{"alias_kind":"pith_short_8","alias_value":"NT7UXWSG","created_at":"2026-07-05T06:43:54Z"}],"graph_snapshots":[{"event_id":"sha256:018f3566af77ca791d1da2ecb5ce61da11c2acde2c715336a25dc36bbf74cc77","target":"graph","created_at":"2026-07-05T06:43:54Z","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/2308.11770/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In the last decade Planck PR4 data together with ground-based experimental data such as, BK18, BAO and CMB lensing, tightened constraint of the tensor to scalar ratio, starting form $r < 0.14$ to $r < 0.032$, while the spectral index lies within the range $0.9631 < n_s < 0.9705$. Viability of modified gravity theories, proposed as alternatives to the dark-energy issue, should therefore be tested in the light of such new result. Here, we explore $F(R,G)$ gravity theory in regard of the early universe and have shown that, it is not compatible with newly released constraints on $r$ and $n_s$ simu","authors_text":"Abhik Kumar Sanyal, Dalia Saha, Jyoti Prasad Saha","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2023-08-18T14:43:32Z","title":"Inflation and cosmological evolution with $F(R,G)$ gravity theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.11770","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":"sha256:44855e5d924963519d7b18e14ac8d84a771a2e459fb8430fb31d63ca08ddd756","target":"record","created_at":"2026-07-05T06:43:54Z","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":"4157930aca5781fd28fbd3c87097a81977e28c34f07cae25ce7cde0e571dd028","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2023-08-18T14:43:32Z","title_canon_sha256":"4945798222054a48bd804d897d9d816414047b7e6752410f432397c9ccf8b8d1"},"schema_version":"1.0","source":{"id":"2308.11770","kind":"arxiv","version":1}},"canonical_sha256":"6cff4bda4669b51ea7988a3a6a8ee26f3390c03da31a9291a3c9bf59b973021c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6cff4bda4669b51ea7988a3a6a8ee26f3390c03da31a9291a3c9bf59b973021c","first_computed_at":"2026-07-05T06:43:54.702630Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:43:54.702630Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"STFttdN7eD5kzE6xJ5dEtZ+i5U5CPNI5oWMMOfGteqwcVlHAbO/J7SY0/7L5KE2+UXnkCCNV1E9fyyxWRljlCg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:43:54.703120Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.11770","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:44855e5d924963519d7b18e14ac8d84a771a2e459fb8430fb31d63ca08ddd756","sha256:018f3566af77ca791d1da2ecb5ce61da11c2acde2c715336a25dc36bbf74cc77"],"state_sha256":"df0ba9d5464e4955b76c28447330c3465a39f2eb53cc57ff7fd650c02a47ea5f"}