{"paper":{"title":"Renormalization-group improved Schwarzschild black hole: shadow, ringdown, and strong cosmic censorship","license":"http://creativecommons.org/licenses/by/4.0/","headline":"An RG-improved Schwarzschild black hole keeps its shadow radius within 1 percent of classical Schwarzschild while making the SCC ratio multipole-independent at the 6 percent level.","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"Ahmad Al-Badawi, Faizuddin Ahmed, \\.Izzet Sakall{\\i}","submitted_at":"2026-04-26T19:52:55Z","abstract_excerpt":"A renormalization-group (RG) improved Schwarzschild-like black hole (BH) is studied here, with a lapse that interpolates between a classical Schwarzschild exterior and a quantum-smoothed interior set by a cutoff scale $\\xi$ and an interpolation parameter $\\gamma$. We work out the horizon structure together with the photon sphere and shadow radius $R_{\\mathrm{sh}}$, set up the scalar, electromagnetic, and Dirac Regge-Wheeler-Zerilli problems in a single treatment, and compute the fundamental and overtone quasinormal modes by sixth-order WKB, cross-checked against time-domain ringdown. For $\\xi>"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"The ratio β = |Im ω| / κ_- is multipole-independent at the 6% level, following β ≃ λ_L / κ_-, and the present solution is the most Schwarzschild-like member of the regular-black-hole family at matched perturbation scale while remaining shadow-degenerate with Hayward and Bonanno-Reuter geometries at the 1% level.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The specific functional form chosen for the lapse function that interpolates between the classical Schwarzschild exterior and the quantum-smoothed interior is assumed to correctly capture the renormalization-group flow effects without additional justification from a full quantum gravity calculation.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"An RG-improved Schwarzschild-like black hole yields a multipole-independent SCC ratio at the 6% level, a bell-shaped Hawking temperature, and remains the most Schwarzschild-like among regular black hole models while shadow-degenerate with Hayward and Bonanno-Reuter at the 1% level.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"An RG-improved Schwarzschild black hole keeps its shadow radius within 1 percent of classical Schwarzschild while making the SCC ratio multipole-independent at the 6 percent level.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"693454c43e6fb0afac3bdaaa33304cbe6826fe2b56caa8f9128b2f6655038ecb"},"source":{"id":"2604.24798","kind":"arxiv","version":4},"verdict":{"id":"831c7800-8000-4160-8eff-10d5f39ff80d","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-08T05:28:46.172931Z","strongest_claim":"The ratio β = |Im ω| / κ_- is multipole-independent at the 6% level, following β ≃ λ_L / κ_-, and the present solution is the most Schwarzschild-like member of the regular-black-hole family at matched perturbation scale while remaining shadow-degenerate with Hayward and Bonanno-Reuter geometries at the 1% level.","one_line_summary":"An RG-improved Schwarzschild-like black hole yields a multipole-independent SCC ratio at the 6% level, a bell-shaped Hawking temperature, and remains the most Schwarzschild-like among regular black hole models while shadow-degenerate with Hayward and Bonanno-Reuter at the 1% level.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The specific functional form chosen for the lapse function that interpolates between the classical Schwarzschild exterior and the quantum-smoothed interior is assumed to correctly capture the renormalization-group flow effects without additional justification from a full quantum gravity calculation.","pith_extraction_headline":"An RG-improved Schwarzschild black hole keeps its shadow radius within 1 percent of classical Schwarzschild while making the SCC ratio multipole-independent at the 6 percent level."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.24798/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-21T08:33:35.127080Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T22:42:38.354376Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"16806c0648a5744dbac06ee2d508a63567c08c24f0fe91d89313d6b7ba980c89"},"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"}