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This region provides a geometric trapping mechanism for nonlinear scalar growth, which becomes effective above a threshold spin χ=0.5. We then construct stationary scalarized black hole solutions with full backreaction and determine their domain of existence. We find that the solutions occupy a finite low-mass high-spin wedge in the spin-mass plane.","weakest_assumption":"The EsGB model does not admit a linear tachyonic instability of the scalar-free solution, making the scalarization genuinely nonlinear; additionally, that numerical construction of backreacted solutions accurately captures the physical domain without artifacts in the high-spin regime."}},"verdict_id":"3b124ecc-28c6-403d-9668-71fdfcd904e5"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:12b1a2b398668c3fcdb780c43c4b128acdad7d1a120d57a0676381285d06e110","target":"record","created_at":"2026-07-08T01:19:13Z","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":"d8f8eb15a6cda0cbf6e368d44fdbeb19c5adadb9dc0ad503308d684dec5e36d7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2026-04-30T12:54:56Z","title_canon_sha256":"14969f28a0021ffec115ae3c847bcc4c8d23d8a84ecbef9abbc441bebe07ede3"},"schema_version":"1.0","source":{"id":"2604.27811","kind":"arxiv","version":1}},"canonical_sha256":"bbc70941af8ad9fd78d83fcd7f913aa6e27e1ec8d64aba406c7f69f1c9ae153f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bbc70941af8ad9fd78d83fcd7f913aa6e27e1ec8d64aba406c7f69f1c9ae153f","first_computed_at":"2026-07-08T01:19:13.554381Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-08T01:19:13.554381Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lttTxRdsBIolG5GZG1cLLxnDij/k8ACfI4qJy5zJ3jQxXWKM3glVkCTFiSer1kzwihWfippZ/as7odxj08a9Ag==","signature_status":"signed_v1","signed_at":"2026-07-08T01:19:13.554840Z","signed_message":"canonical_sha256_bytes"},"source_id":"2604.27811","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:12b1a2b398668c3fcdb780c43c4b128acdad7d1a120d57a0676381285d06e110","sha256:ade4a534adadcd0cee02946d95a20ff72a731553c05aedc27bc594d650accc90"],"state_sha256":"d7039891913505a7337ed38372d5bec814e67c26e38296332d3538ef70647050"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XGtWk6FdH5wNgJ4EzmRCr7HHKGFIE3NUfxknXsAtjgU2IGQ+73xlMsA8/HJe6rPLKgKZf0DOKbe+te+zQ4r/Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T09:14:30.923629Z","bundle_sha256":"4b0f69ad60e2e7382b6f932f1be76a1aa5492d8cd4840fe7ebdddc8fc0787b5c"}}