{"paper":{"title":"Spinning extremal dyonic black holes in $\\gamma=1$ Einstein-Maxwell-dilaton theory","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Spinning extremal dyonic black holes exist without pathologies when electric and magnetic charges are equal.","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"Carlos Herdeiro, Etevaldo dos Santos Costa Filho, Eugen Radu, Jose Luis Bl\\'azquez-Salcedo, Kunihito Uzawa","submitted_at":"2025-12-23T19:00:03Z","abstract_excerpt":"We propose a general framework for the study of asymptotically flat spinning dyonic {\\it extremal} black holes (eBHs) in $D=4$ Einstein-Maxwell-dilaton theory. Restricting to the stringy value $\\gamma=1$ of the dilaton coupling constant, we report on the existence of a one parameter family of eBHs which are free of pathologies, provided their magnetic and electric charges are equal. An understanding of this condition is found from a study of the near horizon limit of the solutions, both perturbative closed form and numerical solutions being presented."},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We report on the existence of a one parameter family of eBHs which are free of pathologies, provided their magnetic and electric charges are equal.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that the near-horizon limit analysis and numerical construction yield globally regular, asymptotically flat solutions only when the electric and magnetic charges are set equal.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"A one-parameter family of pathology-free spinning dyonic extremal black holes exists in γ=1 Einstein-Maxwell-dilaton theory when electric and magnetic charges are equal.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Spinning extremal dyonic black holes exist without pathologies when electric and magnetic charges are equal.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"50f1cf6a9f341a2f46e98f7eb150a7ae792c4a3b2d1a29c5177c79cf2fff88ab"},"source":{"id":"2512.20698","kind":"arxiv","version":2},"verdict":{"id":"1ec7fe6a-85ee-4310-95bc-c71309a5f62d","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-16T20:01:54.539195Z","strongest_claim":"We report on the existence of a one parameter family of eBHs which are free of pathologies, provided their magnetic and electric charges are equal.","one_line_summary":"A one-parameter family of pathology-free spinning dyonic extremal black holes exists in γ=1 Einstein-Maxwell-dilaton theory when electric and magnetic charges are equal.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that the near-horizon limit analysis and numerical construction yield globally regular, asymptotically flat solutions only when the electric and magnetic charges are set equal.","pith_extraction_headline":"Spinning extremal dyonic black holes exist without pathologies when electric and magnetic charges are equal."},"references":{"count":31,"sample":[{"doi":"","year":1996,"title":"Microscopic origin o f the Bekenstein-Hawking entropy","work_id":"0482270a-f323-4519-9470-5d65a9731c0a","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1997,"title":"J. C. Breckenridge, Robert C. Myers, A. W. Peet, and C. Vaf a. D-branes and spinning black holes. Phys. Lett. B , 391:93–98, 1997","work_id":"e3d864be-a064-490b-b532-e2e306ff0e2d","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2000,"title":"C. A. R. Herdeiro. Special properties of five-dimensiona l BPS rotating black holes. Nucl. Phys. B , 582:363–392, 2000","work_id":"7b2f1ed3-97ff-4730-a543-031b69441c24","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1965,"title":"E T. Newman, E. Couch, K. Chinnapared, A. Exton, A. Prakas h, and R. Torrence. Metric of a Rotating, Charged Mass. J. Math. Phys. , 6:918–919, 1965","work_id":"76160127-b35e-4f5f-af97-e0ba82f39a83","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1999,"title":"Bardeen and Gary T","work_id":"4f8ea011-a5c7-4cda-8351-ea1931f121c1","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":31,"snapshot_sha256":"c84260ae46450df9aa7dcd96d58e38e51cf38131b7f0decd1f497d6d8f986ae4","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"}