{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2004:XGQM6ZVRCADWCCQO2RV7TGHKFM","short_pith_number":"pith:XGQM6ZVR","schema_version":"1.0","canonical_sha256":"b9a0cf66b11007610a0ed46bf998ea2b0584bab5d093badcae148e4189639435","source":{"kind":"arxiv","id":"gr-qc/0407021","version":1},"attestation_state":"computed","paper":{"title":"de Sitter attractors in generalized gravity","license":"","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Valerio Faraoni","submitted_at":"2004-07-06T06:01:45Z","abstract_excerpt":"We obtain conditions for the existence and stability of de Sitter attractors in the phase space of spatially homogeneous and isotropic cosmology in generalized theories of gravity (including non-linear and scalar-tensor theories). These conditions are valid for any form of the coupling functions of the theory. Stability with respect to inhomogeneous perturbations is analyzed using a covariant and gauge-invariant formalism. The relevance for inflationary scenarios of the early universe and for quintessence models of the present era is discussed."},"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":"gr-qc/0407021","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"2004-07-06T06:01:45Z","cross_cats_sorted":[],"title_canon_sha256":"c925c66f317328af43aa366222a776abd1105894fd2499f3f590c223c07065ad","abstract_canon_sha256":"62531ae5dbcf19bf985a0b9ab885e382259e94877728d97a8897ee06378050f9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:47:46.127016Z","signature_b64":"PcJ4YeXFpMHXyYZD7V7OKkRS2V5CwF2KB9Snmxpr5ZgiE12EAT8LK42EwjYL3fds4vrH1e4cdWx7N6Lvub9mBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9a0cf66b11007610a0ed46bf998ea2b0584bab5d093badcae148e4189639435","last_reissued_at":"2026-07-04T16:47:46.126647Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:47:46.126647Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"de Sitter attractors in generalized gravity","license":"","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Valerio Faraoni","submitted_at":"2004-07-06T06:01:45Z","abstract_excerpt":"We obtain conditions for the existence and stability of de Sitter attractors in the phase space of spatially homogeneous and isotropic cosmology in generalized theories of gravity (including non-linear and scalar-tensor theories). These conditions are valid for any form of the coupling functions of the theory. Stability with respect to inhomogeneous perturbations is analyzed using a covariant and gauge-invariant formalism. The relevance for inflationary scenarios of the early universe and for quintessence models of the present era is discussed."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/0407021","kind":"arxiv","version":1},"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/gr-qc/0407021/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":"gr-qc/0407021","created_at":"2026-07-04T16:47:46.126708+00:00"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/0407021v1","created_at":"2026-07-04T16:47:46.126708+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/0407021","created_at":"2026-07-04T16:47:46.126708+00:00"},{"alias_kind":"pith_short_12","alias_value":"XGQM6ZVRCADW","created_at":"2026-07-04T16:47:46.126708+00:00"},{"alias_kind":"pith_short_16","alias_value":"XGQM6ZVRCADWCCQO","created_at":"2026-07-04T16:47:46.126708+00:00"},{"alias_kind":"pith_short_8","alias_value":"XGQM6ZVR","created_at":"2026-07-04T16:47:46.126708+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/XGQM6ZVRCADWCCQO2RV7TGHKFM","json":"https://pith.science/pith/XGQM6ZVRCADWCCQO2RV7TGHKFM.json","graph_json":"https://pith.science/api/pith-number/XGQM6ZVRCADWCCQO2RV7TGHKFM/graph.json","events_json":"https://pith.science/api/pith-number/XGQM6ZVRCADWCCQO2RV7TGHKFM/events.json","paper":"https://pith.science/paper/XGQM6ZVR"},"agent_actions":{"view_html":"https://pith.science/pith/XGQM6ZVRCADWCCQO2RV7TGHKFM","download_json":"https://pith.science/pith/XGQM6ZVRCADWCCQO2RV7TGHKFM.json","view_paper":"https://pith.science/paper/XGQM6ZVR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=gr-qc/0407021&json=true","fetch_graph":"https://pith.science/api/pith-number/XGQM6ZVRCADWCCQO2RV7TGHKFM/graph.json","fetch_events":"https://pith.science/api/pith-number/XGQM6ZVRCADWCCQO2RV7TGHKFM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XGQM6ZVRCADWCCQO2RV7TGHKFM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XGQM6ZVRCADWCCQO2RV7TGHKFM/action/storage_attestation","attest_author":"https://pith.science/pith/XGQM6ZVRCADWCCQO2RV7TGHKFM/action/author_attestation","sign_citation":"https://pith.science/pith/XGQM6ZVRCADWCCQO2RV7TGHKFM/action/citation_signature","submit_replication":"https://pith.science/pith/XGQM6ZVRCADWCCQO2RV7TGHKFM/action/replication_record"}},"created_at":"2026-07-04T16:47:46.126708+00:00","updated_at":"2026-07-04T16:47:46.126708+00:00"}