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We show that experimental values can be reproduced at mean-field level by substantially increasing the attraction of the singlet $S$-wave two-nucleon contact interaction, but doing so induces an unphysical bound s"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We find that pairing gaps remain largely unaffected, leaving the explanation of nuclear superfluidity as a future task for improved many-body modeling and refined interactions at higher chiral orders.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that mean-field level calculations combined with third-order chiral interactions and the chosen Bayesian posterior sampling are sufficient to conclude that the discrepancy originates outside the interaction calibration.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Neutron pairing gaps in calcium isotopes are insensitive to variations in third-order chiral interactions, indicating that nuclear superfluidity requires improved many-body modeling or higher-order terms.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Bayesian calibration of third-order chiral interactions leaves neutron pairing gaps in calcium isotopes too small.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"4c37e9561438729d617d00e08cf4c065056442eb85c33901ec7b1786be3eef72"},"source":{"id":"2601.20942","kind":"arxiv","version":2},"verdict":{"id":"0fd1a9c8-a30e-4735-84e4-4169c7d366af","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-16T09:41:30.505227Z","strongest_claim":"We find that pairing gaps remain largely unaffected, leaving the explanation of nuclear superfluidity as a future task for improved many-body modeling and refined interactions at higher chiral orders.","one_line_summary":"Neutron pairing gaps in calcium isotopes are insensitive to variations in third-order chiral interactions, indicating that nuclear superfluidity requires improved many-body modeling or higher-order terms.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that mean-field level calculations combined with third-order chiral interactions and the chosen Bayesian posterior sampling are sufficient to conclude that the discrepancy originates outside the interaction calibration.","pith_extraction_headline":"Bayesian calibration of third-order chiral interactions leaves neutron pairing gaps in calcium isotopes too small."},"references":{"count":54,"sample":[{"doi":"","year":1959,"title":"L. 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