{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:ZJ3H6IPB3Z66EBWRBERLJ5CBKW","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":"99b9ade3deed91ac2c0ecef180b052156c190a4a760b6b65f7ba45f705267a89","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-11-12T14:24:14Z","title_canon_sha256":"8a062b230fab4e913dea959d27f0cbdb8a3a27c6bf7bcc63e73e16f1d601e529"},"schema_version":"1.0","source":{"id":"1011.2915","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.2915","created_at":"2026-05-18T04:26:12Z"},{"alias_kind":"arxiv_version","alias_value":"1011.2915v2","created_at":"2026-05-18T04:26:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.2915","created_at":"2026-05-18T04:26:12Z"},{"alias_kind":"pith_short_12","alias_value":"ZJ3H6IPB3Z66","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"ZJ3H6IPB3Z66EBWR","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"ZJ3H6IPB","created_at":"2026-05-18T12:26:17Z"}],"graph_snapshots":[{"event_id":"sha256:a0aa52c343e4b386fda1ff258b1e1780889a73b65daeba13f0b7bf1456199cd2","target":"graph","created_at":"2026-05-18T04:26:12Z","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":"We consider the massive scalar-tensor theory in the Jordan frame $F(\\Phi) =K^{2}\\Phi^2$ and $U(\\Phi) =(1/2)m^{2}\\Phi^2$, where $F(\\Phi)$ corresponds to a constant Brans-Dicke parameter $\\omega_{BD}=1/4K^2$. The constraint of the Solar System experiments is $K^2<(1/400)^2$. For dustlike matter in a spatially flat homogeneous isotropic universe, we reduce the equations of motion to a system of two differential equations of first order which can be exactly solved. We obtain simple and explicit expressions for $\\frac{\\Phi(z)}{\\Phi(0)}$ and $\\frac{H(z)}{H_{0}}$ that depend only on two parameters, $","authors_text":"B. Boisseau","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-11-12T14:24:14Z","title":"Exact cosmological solution of a Scalar-Tensor Gravity theory compatible with the $\\Lambda CDM$ model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.2915","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":"sha256:555ec6e1230bed89ff9d9e29a3c69b1d278d8b76a06760c9599c45e50b77b5d7","target":"record","created_at":"2026-05-18T04:26:12Z","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":"99b9ade3deed91ac2c0ecef180b052156c190a4a760b6b65f7ba45f705267a89","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-11-12T14:24:14Z","title_canon_sha256":"8a062b230fab4e913dea959d27f0cbdb8a3a27c6bf7bcc63e73e16f1d601e529"},"schema_version":"1.0","source":{"id":"1011.2915","kind":"arxiv","version":2}},"canonical_sha256":"ca767f21e1de7de206d10922b4f44155b5a88d6f5c64a51f142811c73ef09ede","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ca767f21e1de7de206d10922b4f44155b5a88d6f5c64a51f142811c73ef09ede","first_computed_at":"2026-05-18T04:26:12.960136Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:26:12.960136Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A8ZYS7MNre7cgzst9aB0rPg4v/+sZJw1wLEwvGf5ia1ACQFz3v0L4d0fs6ZNT9Tplw5a1/GALKUZaZJIB8PgBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:26:12.960682Z","signed_message":"canonical_sha256_bytes"},"source_id":"1011.2915","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:555ec6e1230bed89ff9d9e29a3c69b1d278d8b76a06760c9599c45e50b77b5d7","sha256:a0aa52c343e4b386fda1ff258b1e1780889a73b65daeba13f0b7bf1456199cd2"],"state_sha256":"6a1bbd6945d2f948152bffcf9651c35f19ff5556e8064f860ca22610a12e1996"}