{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:ANSA5BQ364F3A7P34HW7DR73O2","short_pith_number":"pith:ANSA5BQ3","canonical_record":{"source":{"id":"2105.04479","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-05-10T16:19:48Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"e5b044c2950d6f8181c3f91ec0e97c0cd51544debc4c5759e79bc48b69b4525b","abstract_canon_sha256":"0c49c29ce8dbc3506edc9484b8935dc68920a4cbcff6b5803f9d5ef2c1c4d8ea"},"schema_version":"1.0"},"canonical_sha256":"03640e861bf70bb07dfbe1edf1c7fb7685aefca1c82fae5100df02c9387f3051","source":{"kind":"arxiv","id":"2105.04479","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.04479","created_at":"2026-07-05T03:12:04Z"},{"alias_kind":"arxiv_version","alias_value":"2105.04479v2","created_at":"2026-07-05T03:12:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.04479","created_at":"2026-07-05T03:12:04Z"},{"alias_kind":"pith_short_12","alias_value":"ANSA5BQ364F3","created_at":"2026-07-05T03:12:04Z"},{"alias_kind":"pith_short_16","alias_value":"ANSA5BQ364F3A7P3","created_at":"2026-07-05T03:12:04Z"},{"alias_kind":"pith_short_8","alias_value":"ANSA5BQ3","created_at":"2026-07-05T03:12:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:ANSA5BQ364F3A7P34HW7DR73O2","target":"record","payload":{"canonical_record":{"source":{"id":"2105.04479","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-05-10T16:19:48Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"e5b044c2950d6f8181c3f91ec0e97c0cd51544debc4c5759e79bc48b69b4525b","abstract_canon_sha256":"0c49c29ce8dbc3506edc9484b8935dc68920a4cbcff6b5803f9d5ef2c1c4d8ea"},"schema_version":"1.0"},"canonical_sha256":"03640e861bf70bb07dfbe1edf1c7fb7685aefca1c82fae5100df02c9387f3051","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:12:04.479225Z","signature_b64":"SDU8NEycPcZnFfrTcwlfVj9ZzDAY/b2QhYpEUJmbVuMESectbhMpZtvPsT1Dw+K4s1cvU2a7QGwazYAOZUKUBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"03640e861bf70bb07dfbe1edf1c7fb7685aefca1c82fae5100df02c9387f3051","last_reissued_at":"2026-07-05T03:12:04.478786Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:12:04.478786Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2105.04479","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:12:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X0DcaFHH1VbplvmeEZt9p2zEcBvsMF3KYh5ZdbRMx02oArlntYYWJ6JIiVn+r0s+ZFc6zXJL4PHKGcM6a0VrCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T22:27:18.582559Z"},"content_sha256":"8e104275f033770d527cf771d65da094cf82751c4e9f06a3b9715c39f50df8c4","schema_version":"1.0","event_id":"sha256:8e104275f033770d527cf771d65da094cf82751c4e9f06a3b9715c39f50df8c4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:ANSA5BQ364F3A7P34HW7DR73O2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Black hole scalarization with Gauss-Bonnet and Ricci scalar couplings","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"Antoine Leh\\'ebel, Georgios Antoniou, Giulia Ventagli, Thomas P. Sotiriou","submitted_at":"2021-05-10T16:19:48Z","abstract_excerpt":"Spontaneous scalarization is a gravitational phenomenon in which deviations from general relativity arise once a certain threshold in curvature is exceeded, while being entirely absent below that threshold. For black holes, scalarization is known to be triggered by a coupling between a scalar and the Gauss-Bonnet invariant. A coupling with the Ricci scalar, which can trigger scalarization in neutron stars, is instead known to not contribute to the onset of black hole scalarization, and has so far been largely ignored in the literature when studying scalarized black holes. In this paper, we stu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.04479","kind":"arxiv","version":2},"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/2105.04479/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":"2026-07-05T03:12:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S7RRtn6cVX0/Ys9kMUb2HeYez7192EbwpBXhJ1EjslFWV02lemoJtwW4wvc2QwIFGU7AKCUX9jX0dNKSdNh3Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T22:27:18.583174Z"},"content_sha256":"d7896b98bf8da2c66bc8cb02cbf8758a9c7ae4a0f004c09254f541ee5168945c","schema_version":"1.0","event_id":"sha256:d7896b98bf8da2c66bc8cb02cbf8758a9c7ae4a0f004c09254f541ee5168945c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ANSA5BQ364F3A7P34HW7DR73O2/bundle.json","state_url":"https://pith.science/pith/ANSA5BQ364F3A7P34HW7DR73O2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ANSA5BQ364F3A7P34HW7DR73O2/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":"2026-08-07T22:27:18Z","links":{"resolver":"https://pith.science/pith/ANSA5BQ364F3A7P34HW7DR73O2","bundle":"https://pith.science/pith/ANSA5BQ364F3A7P34HW7DR73O2/bundle.json","state":"https://pith.science/pith/ANSA5BQ364F3A7P34HW7DR73O2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ANSA5BQ364F3A7P34HW7DR73O2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:ANSA5BQ364F3A7P34HW7DR73O2","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":"0c49c29ce8dbc3506edc9484b8935dc68920a4cbcff6b5803f9d5ef2c1c4d8ea","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-05-10T16:19:48Z","title_canon_sha256":"e5b044c2950d6f8181c3f91ec0e97c0cd51544debc4c5759e79bc48b69b4525b"},"schema_version":"1.0","source":{"id":"2105.04479","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.04479","created_at":"2026-07-05T03:12:04Z"},{"alias_kind":"arxiv_version","alias_value":"2105.04479v2","created_at":"2026-07-05T03:12:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.04479","created_at":"2026-07-05T03:12:04Z"},{"alias_kind":"pith_short_12","alias_value":"ANSA5BQ364F3","created_at":"2026-07-05T03:12:04Z"},{"alias_kind":"pith_short_16","alias_value":"ANSA5BQ364F3A7P3","created_at":"2026-07-05T03:12:04Z"},{"alias_kind":"pith_short_8","alias_value":"ANSA5BQ3","created_at":"2026-07-05T03:12:04Z"}],"graph_snapshots":[{"event_id":"sha256:d7896b98bf8da2c66bc8cb02cbf8758a9c7ae4a0f004c09254f541ee5168945c","target":"graph","created_at":"2026-07-05T03:12:04Z","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/2105.04479/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Spontaneous scalarization is a gravitational phenomenon in which deviations from general relativity arise once a certain threshold in curvature is exceeded, while being entirely absent below that threshold. For black holes, scalarization is known to be triggered by a coupling between a scalar and the Gauss-Bonnet invariant. A coupling with the Ricci scalar, which can trigger scalarization in neutron stars, is instead known to not contribute to the onset of black hole scalarization, and has so far been largely ignored in the literature when studying scalarized black holes. In this paper, we stu","authors_text":"Antoine Leh\\'ebel, Georgios Antoniou, Giulia Ventagli, Thomas P. Sotiriou","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-05-10T16:19:48Z","title":"Black hole scalarization with Gauss-Bonnet and Ricci scalar couplings"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.04479","kind":"arxiv","version":2},"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":"sha256:8e104275f033770d527cf771d65da094cf82751c4e9f06a3b9715c39f50df8c4","target":"record","created_at":"2026-07-05T03:12:04Z","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":"0c49c29ce8dbc3506edc9484b8935dc68920a4cbcff6b5803f9d5ef2c1c4d8ea","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-05-10T16:19:48Z","title_canon_sha256":"e5b044c2950d6f8181c3f91ec0e97c0cd51544debc4c5759e79bc48b69b4525b"},"schema_version":"1.0","source":{"id":"2105.04479","kind":"arxiv","version":2}},"canonical_sha256":"03640e861bf70bb07dfbe1edf1c7fb7685aefca1c82fae5100df02c9387f3051","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"03640e861bf70bb07dfbe1edf1c7fb7685aefca1c82fae5100df02c9387f3051","first_computed_at":"2026-07-05T03:12:04.478786Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:12:04.478786Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SDU8NEycPcZnFfrTcwlfVj9ZzDAY/b2QhYpEUJmbVuMESectbhMpZtvPsT1Dw+K4s1cvU2a7QGwazYAOZUKUBw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:12:04.479225Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.04479","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8e104275f033770d527cf771d65da094cf82751c4e9f06a3b9715c39f50df8c4","sha256:d7896b98bf8da2c66bc8cb02cbf8758a9c7ae4a0f004c09254f541ee5168945c"],"state_sha256":"a7f044544c3660bfe445bffbc5c82e4bda14a4f509f916e42d7fbb60ebeba0f8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+YW7T90usLW6KwBJ8XfeyMf2jqs4WPf4NNRkP9RrODzmTyUPrkVQ3y/yDMcNDvqRUW3q6S3zB1yb4YBUt9CTCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T22:27:18.588547Z","bundle_sha256":"fad94ca45bf39b3db37af66b38e808612ce9fdab0d2c69df463e00952b6abaa5"}}