{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:PURP54NU5HQLSMLOLWNAPPBCJ6","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":"1372f3ad223f327cc5e19a6aafe3d3793e3eded05cf1e2b9c47eb8cbb89cfaf6","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-03-01T19:23:24Z","title_canon_sha256":"78db899f9dc68b59f0121b4c91c192f50216a3765825aaa25843ca881432edf8"},"schema_version":"1.0","source":{"id":"2003.00564","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.00564","created_at":"2026-07-05T01:52:57Z"},{"alias_kind":"arxiv_version","alias_value":"2003.00564v1","created_at":"2026-07-05T01:52:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.00564","created_at":"2026-07-05T01:52:57Z"},{"alias_kind":"pith_short_12","alias_value":"PURP54NU5HQL","created_at":"2026-07-05T01:52:57Z"},{"alias_kind":"pith_short_16","alias_value":"PURP54NU5HQLSMLO","created_at":"2026-07-05T01:52:57Z"},{"alias_kind":"pith_short_8","alias_value":"PURP54NU","created_at":"2026-07-05T01:52:57Z"}],"graph_snapshots":[{"event_id":"sha256:ab6d053fa5663d1fef2d238ee78aff92b5ecb896064045fa2ed1b1974f6aa16a","target":"graph","created_at":"2026-07-05T01:52:57Z","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/2003.00564/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this work we consider black holes surrounded by anisotropic fluids in four dimensions. We first study the causal structure of these solutions showing some similarities and differences with Reissner-Nordstr\\\"om-de Sitter black holes. In addition, we consider scalar perturbations on this background geometry and compute the corresponding quasinormal modes. Moreover, we discuss the late-time behavior of the perturbations finding an interesting new feature, i.e., the presence of a subdominant power-law tail term. Likewise, we compute the Bekenstein entropy bound and the first semiclassical corre","authors_text":"B. Cuadros-Melgar, Jeferson de Oliveira, R. D. B. Fontana","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-03-01T19:23:24Z","title":"Late-time tails, entropy aspects, and stability of black holes with anisotropic fluids"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.00564","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":"sha256:9b4bee487271676caac13601ed80b3d2f769a2c79f3f1298cc94a07ed6e847e7","target":"record","created_at":"2026-07-05T01:52:57Z","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":"1372f3ad223f327cc5e19a6aafe3d3793e3eded05cf1e2b9c47eb8cbb89cfaf6","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-03-01T19:23:24Z","title_canon_sha256":"78db899f9dc68b59f0121b4c91c192f50216a3765825aaa25843ca881432edf8"},"schema_version":"1.0","source":{"id":"2003.00564","kind":"arxiv","version":1}},"canonical_sha256":"7d22fef1b4e9e0b9316e5d9a07bc224fb0b59f3d29797be90ed59760c11026a1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d22fef1b4e9e0b9316e5d9a07bc224fb0b59f3d29797be90ed59760c11026a1","first_computed_at":"2026-07-05T01:52:57.949111Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:52:57.949111Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XBEsOEpUWWZ+GXO6XqUfPjY3GS9mqAEpmf5gjh60el9gOpbKzEpsfuurWU83aIEVqnE1tMm6I/9k3ytT7YczDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:52:57.949558Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.00564","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9b4bee487271676caac13601ed80b3d2f769a2c79f3f1298cc94a07ed6e847e7","sha256:ab6d053fa5663d1fef2d238ee78aff92b5ecb896064045fa2ed1b1974f6aa16a"],"state_sha256":"029bb4b771a4fa81aa9c184d747715dcbadd4389494f4fc45da7885b240217c7"}