{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:DNEZYKQH76SD65W2BGJZOAPA5N","short_pith_number":"pith:DNEZYKQH","canonical_record":{"source":{"id":"1208.0600","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-08-02T20:00:04Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"23f586429257243921aeba454e8c82d7c504fc2020e179fb0730a807be26346a","abstract_canon_sha256":"c920733f55f7ae6cab905b47d75d50acc14d5f5c0fb0b878cc89f87e23d9644a"},"schema_version":"1.0"},"canonical_sha256":"1b499c2a07ffa43f76da09939701e0eb620ae3ce7eda65105706be7d83d6140b","source":{"kind":"arxiv","id":"1208.0600","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.0600","created_at":"2026-05-18T03:36:04Z"},{"alias_kind":"arxiv_version","alias_value":"1208.0600v2","created_at":"2026-05-18T03:36:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.0600","created_at":"2026-05-18T03:36:04Z"},{"alias_kind":"pith_short_12","alias_value":"DNEZYKQH76SD","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"DNEZYKQH76SD65W2","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"DNEZYKQH","created_at":"2026-05-18T12:27:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:DNEZYKQH76SD65W2BGJZOAPA5N","target":"record","payload":{"canonical_record":{"source":{"id":"1208.0600","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-08-02T20:00:04Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"23f586429257243921aeba454e8c82d7c504fc2020e179fb0730a807be26346a","abstract_canon_sha256":"c920733f55f7ae6cab905b47d75d50acc14d5f5c0fb0b878cc89f87e23d9644a"},"schema_version":"1.0"},"canonical_sha256":"1b499c2a07ffa43f76da09939701e0eb620ae3ce7eda65105706be7d83d6140b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:36:04.376073Z","signature_b64":"bJy4wwx2IKxUn2X3C7CiG15Jeap2PcIW15S8B/cyFMzMtmN5kZquZobTWIh++VHcro2VI9BT46lFK72h8DlCAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1b499c2a07ffa43f76da09939701e0eb620ae3ce7eda65105706be7d83d6140b","last_reissued_at":"2026-05-18T03:36:04.375548Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:36:04.375548Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.0600","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:36:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pKKlTOgk8JdyT8y/hKYMnZbR/B+CN7LXf4A+6KbxuVkKvfgHUxkkQPd/82ZUM0rMdW7n/pkYwthPK/LDe4P1Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T03:41:28.412677Z"},"content_sha256":"4d17754e33cc1da43223a2ff6d26dd32c4430beb2063e1a96da79d3a81b2e1b5","schema_version":"1.0","event_id":"sha256:4d17754e33cc1da43223a2ff6d26dd32c4430beb2063e1a96da79d3a81b2e1b5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:DNEZYKQH76SD65W2BGJZOAPA5N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Linear perturbations in Galileon gravity models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Alexandre Barreira (ICC&IPPP, Baojiu Li (ICC, Carlton Baugh (ICC, Durham), Silvia Pascoli (IPPP","submitted_at":"2012-08-02T20:00:04Z","abstract_excerpt":"We study the cosmology of Galileon modified gravity models in the linear perturbation regime. We derive the fully covariant and gauge invariant perturbed field equations using two different methods, which give consistent results, and solve them using a modified version of the {\\tt CAMB} code. We find that, in addition to modifying the background expansion history and therefore shifting the positions of the acoustic peaks in the cosmic microwave background (CMB) power spectrum, the Galileon field can cluster strongly from early times, and causes the Weyl gravitational potential to grow, rather "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.0600","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:36:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8piacNceUiK15yRH6xpuanlzCFBox4xMFwiASFDrN8KzafDiKT+mdbB8kutOyxrPADXORN7f3nrhVlpm8nH9Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T03:41:28.413373Z"},"content_sha256":"49c3c6e6eb6df27d6487b7a541cb724dbe12a677210f4d134b4a661bc6d57c78","schema_version":"1.0","event_id":"sha256:49c3c6e6eb6df27d6487b7a541cb724dbe12a677210f4d134b4a661bc6d57c78"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DNEZYKQH76SD65W2BGJZOAPA5N/bundle.json","state_url":"https://pith.science/pith/DNEZYKQH76SD65W2BGJZOAPA5N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DNEZYKQH76SD65W2BGJZOAPA5N/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-27T03:41:28Z","links":{"resolver":"https://pith.science/pith/DNEZYKQH76SD65W2BGJZOAPA5N","bundle":"https://pith.science/pith/DNEZYKQH76SD65W2BGJZOAPA5N/bundle.json","state":"https://pith.science/pith/DNEZYKQH76SD65W2BGJZOAPA5N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DNEZYKQH76SD65W2BGJZOAPA5N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:DNEZYKQH76SD65W2BGJZOAPA5N","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":"c920733f55f7ae6cab905b47d75d50acc14d5f5c0fb0b878cc89f87e23d9644a","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-08-02T20:00:04Z","title_canon_sha256":"23f586429257243921aeba454e8c82d7c504fc2020e179fb0730a807be26346a"},"schema_version":"1.0","source":{"id":"1208.0600","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.0600","created_at":"2026-05-18T03:36:04Z"},{"alias_kind":"arxiv_version","alias_value":"1208.0600v2","created_at":"2026-05-18T03:36:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.0600","created_at":"2026-05-18T03:36:04Z"},{"alias_kind":"pith_short_12","alias_value":"DNEZYKQH76SD","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"DNEZYKQH76SD65W2","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"DNEZYKQH","created_at":"2026-05-18T12:27:04Z"}],"graph_snapshots":[{"event_id":"sha256:49c3c6e6eb6df27d6487b7a541cb724dbe12a677210f4d134b4a661bc6d57c78","target":"graph","created_at":"2026-05-18T03:36:04Z","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 study the cosmology of Galileon modified gravity models in the linear perturbation regime. We derive the fully covariant and gauge invariant perturbed field equations using two different methods, which give consistent results, and solve them using a modified version of the {\\tt CAMB} code. We find that, in addition to modifying the background expansion history and therefore shifting the positions of the acoustic peaks in the cosmic microwave background (CMB) power spectrum, the Galileon field can cluster strongly from early times, and causes the Weyl gravitational potential to grow, rather ","authors_text":"Alexandre Barreira (ICC&IPPP, Baojiu Li (ICC, Carlton Baugh (ICC, Durham), Silvia Pascoli (IPPP","cross_cats":["gr-qc","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-08-02T20:00:04Z","title":"Linear perturbations in Galileon gravity models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.0600","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":"sha256:4d17754e33cc1da43223a2ff6d26dd32c4430beb2063e1a96da79d3a81b2e1b5","target":"record","created_at":"2026-05-18T03:36:04Z","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":"c920733f55f7ae6cab905b47d75d50acc14d5f5c0fb0b878cc89f87e23d9644a","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-08-02T20:00:04Z","title_canon_sha256":"23f586429257243921aeba454e8c82d7c504fc2020e179fb0730a807be26346a"},"schema_version":"1.0","source":{"id":"1208.0600","kind":"arxiv","version":2}},"canonical_sha256":"1b499c2a07ffa43f76da09939701e0eb620ae3ce7eda65105706be7d83d6140b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1b499c2a07ffa43f76da09939701e0eb620ae3ce7eda65105706be7d83d6140b","first_computed_at":"2026-05-18T03:36:04.375548Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:36:04.375548Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bJy4wwx2IKxUn2X3C7CiG15Jeap2PcIW15S8B/cyFMzMtmN5kZquZobTWIh++VHcro2VI9BT46lFK72h8DlCAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:36:04.376073Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.0600","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4d17754e33cc1da43223a2ff6d26dd32c4430beb2063e1a96da79d3a81b2e1b5","sha256:49c3c6e6eb6df27d6487b7a541cb724dbe12a677210f4d134b4a661bc6d57c78"],"state_sha256":"cabd49abff6fae057e73720086056350d9037257dcb06da28c802d1ef4ed5726"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cKQb6UcQbMQY1rGAxszGAuX1npSlrqBE/rIbnwgFlOFRpDI0dE0IPHWamnayC0dJBAarBR5CPCPbyeTdxKvqBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T03:41:28.416824Z","bundle_sha256":"21cc386593445c2fcca5a11bf7a8e849a76bbc9952a995f4aa05198cf2dc3163"}}