{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:HM4S7OCGUQT24C5CUOMZNL2RXD","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":"553ad16c5f740d1602e2621d697d17a880ee1c5cb6b1cba2f515c2746b603d8b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-01T08:05:42Z","title_canon_sha256":"a45e45537f1d32a1ce42becaecbac147f13bd6fa40b194b23944b433b21dfb82"},"schema_version":"1.0","source":{"id":"1908.00252","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.00252","created_at":"2026-07-05T00:02:01Z"},{"alias_kind":"arxiv_version","alias_value":"1908.00252v1","created_at":"2026-07-05T00:02:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.00252","created_at":"2026-07-05T00:02:01Z"},{"alias_kind":"pith_short_12","alias_value":"HM4S7OCGUQT2","created_at":"2026-07-05T00:02:01Z"},{"alias_kind":"pith_short_16","alias_value":"HM4S7OCGUQT24C5C","created_at":"2026-07-05T00:02:01Z"},{"alias_kind":"pith_short_8","alias_value":"HM4S7OCG","created_at":"2026-07-05T00:02:01Z"}],"graph_snapshots":[{"event_id":"sha256:d6ed1f91eec7ac1cea67ca95f8bca9cb14c4a98ce7575f33373d178d8897a364","target":"graph","created_at":"2026-07-05T00:02:01Z","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/1908.00252/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this work we study whether parametrized spherically symmetric black hole solutions in metric theories of gravity can appear to be isospectral when studying perturbations. From a theory agnostic point of view, the test scalar field wave equation is the ideal starting point to approach the quasi-normal mode spectrum in alternative black hole solutions. We use a parametrization for the metric proposed by Rezzolla and Zhidenko, as well as the the higher order WKB method in the determination of the quasi-normal mode spectra. We look for possible degeneracies in a tractable subset of the paramete","authors_text":"Kostas D. Kokkotas, Sebastian H. V\\\"olkel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-01T08:05:42Z","title":"Scalar Fields and Parametrized Spherically Symmetric Black Holes: Can one hear the shape of space-time?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.00252","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":"sha256:83d459ee4f49813169e4a9bea24fefd03117be8d8e98b2cebd4b21b86db4eecc","target":"record","created_at":"2026-07-05T00:02:01Z","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":"553ad16c5f740d1602e2621d697d17a880ee1c5cb6b1cba2f515c2746b603d8b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-01T08:05:42Z","title_canon_sha256":"a45e45537f1d32a1ce42becaecbac147f13bd6fa40b194b23944b433b21dfb82"},"schema_version":"1.0","source":{"id":"1908.00252","kind":"arxiv","version":1}},"canonical_sha256":"3b392fb846a427ae0ba2a39996af51b8fc291af680b84fc59f9c17f3a355f0e6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3b392fb846a427ae0ba2a39996af51b8fc291af680b84fc59f9c17f3a355f0e6","first_computed_at":"2026-07-05T00:02:01.519971Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:02:01.519971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5m7EOlAPF+hiiLVsUDpgOTwhynjhQyBTnifNdbupHqbrAgz2CCM3bzV+WLbPT66q25RM0EgqumpjOVeDAUrdCA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:02:01.520475Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.00252","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:83d459ee4f49813169e4a9bea24fefd03117be8d8e98b2cebd4b21b86db4eecc","sha256:d6ed1f91eec7ac1cea67ca95f8bca9cb14c4a98ce7575f33373d178d8897a364"],"state_sha256":"57f9f71c49b0496d53ece5824814e8d838f1f0a59f5ab31fe2cbde3c006bcda3"}