{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:V23QE44IPMPG6IINIQC6N56EUG","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":"b3bc4b634f3d591ea052c56acd396287a1b3ccba38d3cb8e63432c4fa35b287c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-24T17:40:22Z","title_canon_sha256":"64c36510f99e5ea417048d6d24755cbdcc36d20e9f708508f7affc0e6d1aa752"},"schema_version":"1.0","source":{"id":"0805.3782","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0805.3782","created_at":"2026-07-04T17:10:59Z"},{"alias_kind":"arxiv_version","alias_value":"0805.3782v2","created_at":"2026-07-04T17:10:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0805.3782","created_at":"2026-07-04T17:10:59Z"},{"alias_kind":"pith_short_12","alias_value":"V23QE44IPMPG","created_at":"2026-07-04T17:10:59Z"},{"alias_kind":"pith_short_16","alias_value":"V23QE44IPMPG6IIN","created_at":"2026-07-04T17:10:59Z"},{"alias_kind":"pith_short_8","alias_value":"V23QE44I","created_at":"2026-07-04T17:10:59Z"}],"graph_snapshots":[{"event_id":"sha256:323bfc4f3d7cda76664a431c05523344eb20b36ba41070b9f9ffa3906e9fa8f8","target":"graph","created_at":"2026-07-04T17:10:59Z","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/0805.3782/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The features of a homogeneous scalar field $\\phi$ with classical Lagrangian $L=\\phi_{;i}\\phi^{;i}/2-V(\\phi)$ and tachyon field Lagrangian $L=-V(\\phi)\\sqrt{1-\\phi_{;i}\\phi^{;i}}$ causing the observable accelerated expansion of the Universe are analyzed. The models with constant equation-of-state parameter $w_{de}=p_{de}/\\rho_{de}<-1/3$ are studied. For both cases the fields $\\phi(a)$ and potentials $V(a)$ are reconstucted for the parameters of cosmological model of the Universe derived from the observations. The effect of rolling down of the potential $V(\\phi)$ to minimum is shown.","authors_text":"B. Novosyadlyj, O. Sergijenko","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-24T17:40:22Z","title":"Scalar Field as Dark Energy Accelerating Expansion of the Universe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0805.3782","kind":"arxiv","version":2},"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":"sha256:596de9243eea559850a423403268e11123e5526e9713cdff04845920caea0152","target":"record","created_at":"2026-07-04T17:10:59Z","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":"b3bc4b634f3d591ea052c56acd396287a1b3ccba38d3cb8e63432c4fa35b287c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-24T17:40:22Z","title_canon_sha256":"64c36510f99e5ea417048d6d24755cbdcc36d20e9f708508f7affc0e6d1aa752"},"schema_version":"1.0","source":{"id":"0805.3782","kind":"arxiv","version":2}},"canonical_sha256":"aeb70273887b1e6f210d4405e6f7c4a195f67ceb18faaf9d154fa5d5466cd6f0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aeb70273887b1e6f210d4405e6f7c4a195f67ceb18faaf9d154fa5d5466cd6f0","first_computed_at":"2026-07-04T17:10:59.576311Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:10:59.576311Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pPQz7m5j+RQ9PnJY59agOEupU8zfdtgnHjWW7C05O8nL+2pl9iYQbF4FlZJWvs0job8cnwpW03Dzw8Pg+bYxCA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:10:59.576760Z","signed_message":"canonical_sha256_bytes"},"source_id":"0805.3782","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:596de9243eea559850a423403268e11123e5526e9713cdff04845920caea0152","sha256:323bfc4f3d7cda76664a431c05523344eb20b36ba41070b9f9ffa3906e9fa8f8"],"state_sha256":"80c1206785abaf2986c5d03e8ea8391971b163fe357bf62bf5382d3dcf351156"}