{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:2RPERGCJRD3VWXTNOTEI5TMR7A","short_pith_number":"pith:2RPERGCJ","schema_version":"1.0","canonical_sha256":"d45e48984988f75b5e6d74c88ecd91f80192aa18f0a093c01827d1dda78b81c3","source":{"kind":"arxiv","id":"2303.07358","version":3},"attestation_state":"computed","paper":{"title":"Extremal Kerr black holes as amplifiers of new physics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","gr-qc","hep-ph"],"primary_cat":"hep-th","authors_text":"Gary T. Horowitz, Grant N. Remmen, Jorge E. Santos, Maciej Kolanowski","submitted_at":"2023-03-13T18:00:00Z","abstract_excerpt":"We show that extremal Kerr black holes are sensitive probes of new physics. Stringy or quantum corrections to general relativity are expected to generate higher-curvature terms in the gravitational action. We show that in the presence of these terms, asymptotically flat extremal rotating black holes have curvature singularities on their horizon. Furthermore, near-extremal black holes can have large yet finite tidal forces for infalling observers. In addition, we consider five-dimensional extremal charged black holes and show that higher-curvature terms can have a large effect on the horizon ge"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2303.07358","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2023-03-13T18:00:00Z","cross_cats_sorted":["astro-ph.HE","gr-qc","hep-ph"],"title_canon_sha256":"902e9ce9462481d12d50d277d9ef707f51792bb8c22812084f72987149c316c6","abstract_canon_sha256":"4b12c1266ac4e8f661f522e2021242939c7f6db75cdfe0beb5e137d706a3e86c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:41:58.521733Z","signature_b64":"O2mYTQnIVR4LQG6kwQSnI5FZ3RDPY3+hqNvZ1uWB7OAHmWdP4ENd8QMK4dnrTPlpGqOd6jEn0jKUF2Xkm/JSAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d45e48984988f75b5e6d74c88ecd91f80192aa18f0a093c01827d1dda78b81c3","last_reissued_at":"2026-07-05T08:41:58.521298Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:41:58.521298Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Extremal Kerr black holes as amplifiers of new physics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","gr-qc","hep-ph"],"primary_cat":"hep-th","authors_text":"Gary T. Horowitz, Grant N. Remmen, Jorge E. Santos, Maciej Kolanowski","submitted_at":"2023-03-13T18:00:00Z","abstract_excerpt":"We show that extremal Kerr black holes are sensitive probes of new physics. Stringy or quantum corrections to general relativity are expected to generate higher-curvature terms in the gravitational action. We show that in the presence of these terms, asymptotically flat extremal rotating black holes have curvature singularities on their horizon. Furthermore, near-extremal black holes can have large yet finite tidal forces for infalling observers. In addition, we consider five-dimensional extremal charged black holes and show that higher-curvature terms can have a large effect on the horizon ge"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.07358","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2303.07358/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2303.07358","created_at":"2026-07-05T08:41:58.521371+00:00"},{"alias_kind":"arxiv_version","alias_value":"2303.07358v3","created_at":"2026-07-05T08:41:58.521371+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.07358","created_at":"2026-07-05T08:41:58.521371+00:00"},{"alias_kind":"pith_short_12","alias_value":"2RPERGCJRD3V","created_at":"2026-07-05T08:41:58.521371+00:00"},{"alias_kind":"pith_short_16","alias_value":"2RPERGCJRD3VWXTN","created_at":"2026-07-05T08:41:58.521371+00:00"},{"alias_kind":"pith_short_8","alias_value":"2RPERGCJ","created_at":"2026-07-05T08:41:58.521371+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":7,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2606.26263","citing_title":"Charged and rotating near-horizon geometries in five dimensions","ref_index":47,"is_internal_anchor":false},{"citing_arxiv_id":"2605.30411","citing_title":"Axions Create Singularities on Extremal Horizons","ref_index":2,"is_internal_anchor":false},{"citing_arxiv_id":"2510.05354","citing_title":"Quasinormal modes of Kerr-Newman black holes: revisiting the Dudley-Finley approximation","ref_index":66,"is_internal_anchor":false},{"citing_arxiv_id":"2512.02338","citing_title":"Leading effective field theory corrections to the Kerr metric at all spins","ref_index":30,"is_internal_anchor":false},{"citing_arxiv_id":"2601.13411","citing_title":"Quasinormal modes and their excitation beyond general relativity. II: isospectrality loss in gravitational waveforms","ref_index":36,"is_internal_anchor":false},{"citing_arxiv_id":"2603.10102","citing_title":"Kerr Black Hole Ringdown in Effective Field Theory","ref_index":23,"is_internal_anchor":false},{"citing_arxiv_id":"2604.02214","citing_title":"Quadratic gravity corrections to scalar QNMs of rapidly rotating black holes","ref_index":70,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/2RPERGCJRD3VWXTNOTEI5TMR7A","json":"https://pith.science/pith/2RPERGCJRD3VWXTNOTEI5TMR7A.json","graph_json":"https://pith.science/api/pith-number/2RPERGCJRD3VWXTNOTEI5TMR7A/graph.json","events_json":"https://pith.science/api/pith-number/2RPERGCJRD3VWXTNOTEI5TMR7A/events.json","paper":"https://pith.science/paper/2RPERGCJ"},"agent_actions":{"view_html":"https://pith.science/pith/2RPERGCJRD3VWXTNOTEI5TMR7A","download_json":"https://pith.science/pith/2RPERGCJRD3VWXTNOTEI5TMR7A.json","view_paper":"https://pith.science/paper/2RPERGCJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2303.07358&json=true","fetch_graph":"https://pith.science/api/pith-number/2RPERGCJRD3VWXTNOTEI5TMR7A/graph.json","fetch_events":"https://pith.science/api/pith-number/2RPERGCJRD3VWXTNOTEI5TMR7A/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2RPERGCJRD3VWXTNOTEI5TMR7A/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2RPERGCJRD3VWXTNOTEI5TMR7A/action/storage_attestation","attest_author":"https://pith.science/pith/2RPERGCJRD3VWXTNOTEI5TMR7A/action/author_attestation","sign_citation":"https://pith.science/pith/2RPERGCJRD3VWXTNOTEI5TMR7A/action/citation_signature","submit_replication":"https://pith.science/pith/2RPERGCJRD3VWXTNOTEI5TMR7A/action/replication_record"}},"created_at":"2026-07-05T08:41:58.521371+00:00","updated_at":"2026-07-05T08:41:58.521371+00:00"}