{"paper":{"title":"Gravitational-wave Echoes Beyond the Hubble Time from Quantum Black Holes","arxiv_id":"2610.05886","primary_cat":"gr-qc","submitted_at":"2026-10-05T07:01:16+00:00","version_compiled":"v1"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13.0 on the question bank abstract-p1-20260923, exactly as returned. 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