{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:XDHP7T4X5IPEEESZXPS3S4MRS2","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":"b4da69dbf6887021a15dbb573d97e505f6225b656f92c5eb17e6af08c9a3f2ec","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-07-18T13:17:46Z","title_canon_sha256":"470c1069de61487f9765125e6599d4dfa3cfee8dd765202d2033ea97793871f2"},"schema_version":"1.0","source":{"id":"1407.4982","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.4982","created_at":"2026-05-18T01:42:34Z"},{"alias_kind":"arxiv_version","alias_value":"1407.4982v2","created_at":"2026-05-18T01:42:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.4982","created_at":"2026-05-18T01:42:34Z"},{"alias_kind":"pith_short_12","alias_value":"XDHP7T4X5IPE","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"XDHP7T4X5IPEEESZ","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"XDHP7T4X","created_at":"2026-05-18T12:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:887d2e23e52db55a54dd2b1ae23040902cb38a4151dbf95863c9851c8a28c1f2","target":"graph","created_at":"2026-05-18T01:42:34Z","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 cosmological perturbations in a non-local higher-derivative model of gravity introduced by Biswas, Mazumdar and Siegel. We extend previous work, which had focused on classical scalar perturbations around a cosine hyperbolic bounce solution, in three ways. First, we point out the existence of a Starobinsky solution in this model, which is more attractive from a phenomenological point of view (even though it has no bounce). Second, we study classical vector and tensor perturbations. Third, we show how to quantize scalar and tensor perturbations in a de Sitter phase (for choices of param","authors_text":"Alexey S. Koshelev, Ben Craps, Tim De Jonckheere","cross_cats":["astro-ph.CO","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-07-18T13:17:46Z","title":"Cosmological perturbations in non-local higher-derivative gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.4982","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":"sha256:9107b837143ec5fdd6684f3be6b7f5fc2d0f82b7ede1d26ed9e6bd0d1706057d","target":"record","created_at":"2026-05-18T01:42:34Z","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":"b4da69dbf6887021a15dbb573d97e505f6225b656f92c5eb17e6af08c9a3f2ec","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-07-18T13:17:46Z","title_canon_sha256":"470c1069de61487f9765125e6599d4dfa3cfee8dd765202d2033ea97793871f2"},"schema_version":"1.0","source":{"id":"1407.4982","kind":"arxiv","version":2}},"canonical_sha256":"b8ceffcf97ea1e421259bbe5b97191968916b932b6d5fef23e12a63c18591bae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b8ceffcf97ea1e421259bbe5b97191968916b932b6d5fef23e12a63c18591bae","first_computed_at":"2026-05-18T01:42:34.026648Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:34.026648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QNLnNna3YxAE9w7p438WyOz1qD/z141dgnVWdDOiq9SqDGWD6wMNUuzkKbwaOce6Bxd+eedLyP9burHrvsI+BA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:34.027216Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.4982","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9107b837143ec5fdd6684f3be6b7f5fc2d0f82b7ede1d26ed9e6bd0d1706057d","sha256:887d2e23e52db55a54dd2b1ae23040902cb38a4151dbf95863c9851c8a28c1f2"],"state_sha256":"4bd7321fb537cf3eb444766d8669677b7cd0f7753edefeafd3d21d56a51cef25"}