{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:U5CIBFYY72RCUGKBGEGC2HCJND","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":"a7b153b1b05dc21637d0bfc6e468c0c79f870b978d548201aa9b30cf2e767f75","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-11T19:59:37Z","title_canon_sha256":"824dc9cd5677cc75b8af359a88c113561def3507a782dd2a09069eac9dc57e24"},"schema_version":"1.0","source":{"id":"1310.3266","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.3266","created_at":"2026-05-18T03:00:12Z"},{"alias_kind":"arxiv_version","alias_value":"1310.3266v1","created_at":"2026-05-18T03:00:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.3266","created_at":"2026-05-18T03:00:12Z"},{"alias_kind":"pith_short_12","alias_value":"U5CIBFYY72RC","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"U5CIBFYY72RCUGKB","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"U5CIBFYY","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:4a66d6f7691b85fedf00eb44329191dde39e714614535c2ba77ea8572cfbf8de","target":"graph","created_at":"2026-05-18T03:00:12Z","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"},"paper":{"abstract_excerpt":"Relativistic scalar fields are ubiquitous in modified theories of gravity. An important tool in understanding their impact on structure formation, especially in the context of N-body simulations, is the quasi-static approximation in which the time evolution of perturbations in the scalar fields is discarded. We show that this approximation must be used with some care by studying linearly perturbed scalar field cosmologies and quantifying the errors that arise from taking the quasi-static limit. We focus on f(R) and chameleon models and link the accuracy of the quasi-static approximation to the","authors_text":"Francesca von Braun-Bates, Johannes Noller, Pedro G. Ferreira","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-11T19:59:37Z","title":"Relativistic scalar fields and the quasi-static approximation in theories of modified gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.3266","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":"sha256:79ade7a3cfc50fcacdab510cdc66a454d745f9296c012e0e03e8892cf3c8ade6","target":"record","created_at":"2026-05-18T03:00:12Z","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":"a7b153b1b05dc21637d0bfc6e468c0c79f870b978d548201aa9b30cf2e767f75","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-11T19:59:37Z","title_canon_sha256":"824dc9cd5677cc75b8af359a88c113561def3507a782dd2a09069eac9dc57e24"},"schema_version":"1.0","source":{"id":"1310.3266","kind":"arxiv","version":1}},"canonical_sha256":"a744809718fea22a1941310c2d1c4968e7b47de34e31d452a143a8ff7826c15b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a744809718fea22a1941310c2d1c4968e7b47de34e31d452a143a8ff7826c15b","first_computed_at":"2026-05-18T03:00:12.388185Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:00:12.388185Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JlYd7HchRJGviGZcpylQO4lQu/HinDC/VEOJZN6hQ0WtTzlHJBHsDJWPmYzIOC5IC5tgG5/1MdR31wAjUdKbAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:00:12.388745Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.3266","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:79ade7a3cfc50fcacdab510cdc66a454d745f9296c012e0e03e8892cf3c8ade6","sha256:4a66d6f7691b85fedf00eb44329191dde39e714614535c2ba77ea8572cfbf8de"],"state_sha256":"177e88adf6ee4b561b2344b125e9778079fcc99fcdbea54c1b6bdb65eb6d0294"}