{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:YO3VXPTKDELM2ZR2MXVNPVVZXE","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":"c2ce1a22ebf73600f92513771db9f31e73e27d8c2637791faeacfd126332219c","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-07-22T11:47:25Z","title_canon_sha256":"0177ae60d9a0dfad99ded8e5486c5682ea8bc0d00d5d0304ce33375b3b2dc4cb"},"schema_version":"1.0","source":{"id":"2507.16493","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.16493","created_at":"2026-07-05T11:41:10Z"},{"alias_kind":"arxiv_version","alias_value":"2507.16493v1","created_at":"2026-07-05T11:41:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.16493","created_at":"2026-07-05T11:41:10Z"},{"alias_kind":"pith_short_12","alias_value":"YO3VXPTKDELM","created_at":"2026-07-05T11:41:10Z"},{"alias_kind":"pith_short_16","alias_value":"YO3VXPTKDELM2ZR2","created_at":"2026-07-05T11:41:10Z"},{"alias_kind":"pith_short_8","alias_value":"YO3VXPTK","created_at":"2026-07-05T11:41:10Z"}],"graph_snapshots":[{"event_id":"sha256:0e4cfafed04c113cdce877ca369f74b11e6f5cb56475686a3e8505ed3d5b30c7","target":"graph","created_at":"2026-07-05T11:41:10Z","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/2507.16493/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Black hole quasinormal modes arise as eigenmodes of a non-normal Hamiltonian and consequently they do not obey orthogonality relations with respect to commonly used inner products, for example, the energy inner product. A direct consequence of this is the appearance of transient phenomena. This review summarises current developments on the topic, both in frequency- and time-domain. In particular, we discuss the appearance of i) transient plateaus: arbitrarily long-lived sums of quasinormal modes, corresponding to localised energy packets near the future horizon; ii) transient growth, with the ","authors_text":"Benjamin Withers, Christiana Pantelidou, Javier Carballo, J\\'er\\'emy Besson","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-07-22T11:47:25Z","title":"Transients in black hole perturbation theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.16493","kind":"arxiv","version":1},"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:dd779a1aabd41ab33cc212bf1abf008f8c93303c56aa4c50a5bad52efde08a8e","target":"record","created_at":"2026-07-05T11:41:10Z","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":"c2ce1a22ebf73600f92513771db9f31e73e27d8c2637791faeacfd126332219c","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-07-22T11:47:25Z","title_canon_sha256":"0177ae60d9a0dfad99ded8e5486c5682ea8bc0d00d5d0304ce33375b3b2dc4cb"},"schema_version":"1.0","source":{"id":"2507.16493","kind":"arxiv","version":1}},"canonical_sha256":"c3b75bbe6a1916cd663a65ead7d6b9b91b854bb3a32f0fc975d3886491d33323","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c3b75bbe6a1916cd663a65ead7d6b9b91b854bb3a32f0fc975d3886491d33323","first_computed_at":"2026-07-05T11:41:10.632693Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:41:10.632693Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"swmCuU78O0Y74QLrP34JQgydcXAFr/on1OdEmNMn7JRs84Eio6TodYmbLHLQMHnLBQfgRYsQN83WT7eVDVMSAw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:41:10.633384Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.16493","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd779a1aabd41ab33cc212bf1abf008f8c93303c56aa4c50a5bad52efde08a8e","sha256:0e4cfafed04c113cdce877ca369f74b11e6f5cb56475686a3e8505ed3d5b30c7"],"state_sha256":"b013820bdf2f615d30f8267e552baa54a21a702788dc9be682d3b4d41ca42863"}