{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:WPCFUWSNGC3EFFE75DNUGLURJ4","short_pith_number":"pith:WPCFUWSN","canonical_record":{"source":{"id":"2004.12326","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-04-26T09:26:20Z","cross_cats_sorted":["astro-ph.CO","gr-qc"],"title_canon_sha256":"bc1b918481deab51c94686285656b6f5cb999d3f8a264c5cef87f3d05393a343","abstract_canon_sha256":"00fd1e9137f44940ca7b1e374fbaf673b97ece3c783cea4b8cc591fd441e570a"},"schema_version":"1.0"},"canonical_sha256":"b3c45a5a4d30b642949fe8db432e914f1fcf856dff92212d69619d48c558c359","source":{"kind":"arxiv","id":"2004.12326","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.12326","created_at":"2026-07-05T01:38:59Z"},{"alias_kind":"arxiv_version","alias_value":"2004.12326v1","created_at":"2026-07-05T01:38:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.12326","created_at":"2026-07-05T01:38:59Z"},{"alias_kind":"pith_short_12","alias_value":"WPCFUWSNGC3E","created_at":"2026-07-05T01:38:59Z"},{"alias_kind":"pith_short_16","alias_value":"WPCFUWSNGC3EFFE7","created_at":"2026-07-05T01:38:59Z"},{"alias_kind":"pith_short_8","alias_value":"WPCFUWSN","created_at":"2026-07-05T01:38:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:WPCFUWSNGC3EFFE75DNUGLURJ4","target":"record","payload":{"canonical_record":{"source":{"id":"2004.12326","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-04-26T09:26:20Z","cross_cats_sorted":["astro-ph.CO","gr-qc"],"title_canon_sha256":"bc1b918481deab51c94686285656b6f5cb999d3f8a264c5cef87f3d05393a343","abstract_canon_sha256":"00fd1e9137f44940ca7b1e374fbaf673b97ece3c783cea4b8cc591fd441e570a"},"schema_version":"1.0"},"canonical_sha256":"b3c45a5a4d30b642949fe8db432e914f1fcf856dff92212d69619d48c558c359","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:38:59.167081Z","signature_b64":"ihQji8M9YCN4jUD1s0pQdUn6ntnRRHg9dp4ed+D57MH0ywpTyUpE38xw0zyhJevCeKJeGLr7968M3wl0zjHKDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b3c45a5a4d30b642949fe8db432e914f1fcf856dff92212d69619d48c558c359","last_reissued_at":"2026-07-05T01:38:59.166716Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:38:59.166716Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2004.12326","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:38:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tRdX9RJBSFi7tt6mtkmSKExkvSRXRxid0QC4e0KO2DGDwWTQQJO6L1vK6sZum+yXbyXFDQaC9ildFjHQttt9CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T02:37:15.515856Z"},"content_sha256":"36c8d3ea4766197fd5526a63db6149a802c1a6e5cf4e767c53d4df8396e03287","schema_version":"1.0","event_id":"sha256:36c8d3ea4766197fd5526a63db6149a802c1a6e5cf4e767c53d4df8396e03287"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:WPCFUWSNGC3EFFE75DNUGLURJ4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Clocking Out Superradiance Limits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","gr-qc"],"primary_cat":"hep-ph","authors_text":"Anubhav Mathur, Erwin H. Tanin, Surjeet Rajendran","submitted_at":"2020-04-26T09:26:20Z","abstract_excerpt":"The superradiant instability of black hole space-times has been used to place limits on ultra-light bosonic particles. We show that these limits are model dependent. While the initial growth of the mode is gravitational and thus model independent, the ability to place a limit on new particles requires the mode to grow unhindered to a large number density. Non-linear interactions between the particle and other light degrees of freedom that are mediated through higher dimension operators can damp this growth, eliminating the limit. However, these non-linearities may also destroy a cosmic abundan"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.12326","kind":"arxiv","version":1},"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/2004.12326/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:38:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e98rSeFFu21E4xuloPGwOmma/mikgGInsD+ReUTE6jP5xrKM0vltUH+rcU9gRyPNtXCnQCNunem4LdxsLHL/Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T02:37:15.516484Z"},"content_sha256":"98c26db35b9e0fd9c36d0b334b05ac9a9f2d0c336ea5fec5e00e4381b447f070","schema_version":"1.0","event_id":"sha256:98c26db35b9e0fd9c36d0b334b05ac9a9f2d0c336ea5fec5e00e4381b447f070"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WPCFUWSNGC3EFFE75DNUGLURJ4/bundle.json","state_url":"https://pith.science/pith/WPCFUWSNGC3EFFE75DNUGLURJ4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WPCFUWSNGC3EFFE75DNUGLURJ4/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-20T02:37:15Z","links":{"resolver":"https://pith.science/pith/WPCFUWSNGC3EFFE75DNUGLURJ4","bundle":"https://pith.science/pith/WPCFUWSNGC3EFFE75DNUGLURJ4/bundle.json","state":"https://pith.science/pith/WPCFUWSNGC3EFFE75DNUGLURJ4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WPCFUWSNGC3EFFE75DNUGLURJ4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:WPCFUWSNGC3EFFE75DNUGLURJ4","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":"00fd1e9137f44940ca7b1e374fbaf673b97ece3c783cea4b8cc591fd441e570a","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-04-26T09:26:20Z","title_canon_sha256":"bc1b918481deab51c94686285656b6f5cb999d3f8a264c5cef87f3d05393a343"},"schema_version":"1.0","source":{"id":"2004.12326","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.12326","created_at":"2026-07-05T01:38:59Z"},{"alias_kind":"arxiv_version","alias_value":"2004.12326v1","created_at":"2026-07-05T01:38:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.12326","created_at":"2026-07-05T01:38:59Z"},{"alias_kind":"pith_short_12","alias_value":"WPCFUWSNGC3E","created_at":"2026-07-05T01:38:59Z"},{"alias_kind":"pith_short_16","alias_value":"WPCFUWSNGC3EFFE7","created_at":"2026-07-05T01:38:59Z"},{"alias_kind":"pith_short_8","alias_value":"WPCFUWSN","created_at":"2026-07-05T01:38:59Z"}],"graph_snapshots":[{"event_id":"sha256:98c26db35b9e0fd9c36d0b334b05ac9a9f2d0c336ea5fec5e00e4381b447f070","target":"graph","created_at":"2026-07-05T01:38:59Z","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/2004.12326/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The superradiant instability of black hole space-times has been used to place limits on ultra-light bosonic particles. We show that these limits are model dependent. While the initial growth of the mode is gravitational and thus model independent, the ability to place a limit on new particles requires the mode to grow unhindered to a large number density. Non-linear interactions between the particle and other light degrees of freedom that are mediated through higher dimension operators can damp this growth, eliminating the limit. However, these non-linearities may also destroy a cosmic abundan","authors_text":"Anubhav Mathur, Erwin H. Tanin, Surjeet Rajendran","cross_cats":["astro-ph.CO","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-04-26T09:26:20Z","title":"Clocking Out Superradiance Limits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.12326","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":"sha256:36c8d3ea4766197fd5526a63db6149a802c1a6e5cf4e767c53d4df8396e03287","target":"record","created_at":"2026-07-05T01:38:59Z","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":"00fd1e9137f44940ca7b1e374fbaf673b97ece3c783cea4b8cc591fd441e570a","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-04-26T09:26:20Z","title_canon_sha256":"bc1b918481deab51c94686285656b6f5cb999d3f8a264c5cef87f3d05393a343"},"schema_version":"1.0","source":{"id":"2004.12326","kind":"arxiv","version":1}},"canonical_sha256":"b3c45a5a4d30b642949fe8db432e914f1fcf856dff92212d69619d48c558c359","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b3c45a5a4d30b642949fe8db432e914f1fcf856dff92212d69619d48c558c359","first_computed_at":"2026-07-05T01:38:59.166716Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:38:59.166716Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ihQji8M9YCN4jUD1s0pQdUn6ntnRRHg9dp4ed+D57MH0ywpTyUpE38xw0zyhJevCeKJeGLr7968M3wl0zjHKDA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:38:59.167081Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.12326","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:36c8d3ea4766197fd5526a63db6149a802c1a6e5cf4e767c53d4df8396e03287","sha256:98c26db35b9e0fd9c36d0b334b05ac9a9f2d0c336ea5fec5e00e4381b447f070"],"state_sha256":"eefa2ac6135a98a3f2624032be9af477097a10735887661fac6a83f58203b81f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+GtaP3XglihOtr3HTAyAYE9549AVlEfybMGuomUvl9LvuZVwEW6+Tk2a9WTC+nR2QyMV2OESr4oq0Y0M4AP9DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T02:37:15.522133Z","bundle_sha256":"b2d46ddb7cd1e41c5784885b112b674638b328ddfbd6e56fa176857c9e2c00cf"}}