A curvature null test tailored to DESI BAO AP parameter and distance ratios via multi-task GPs finds dataset compatibility with a tentative ~2σ nonzero curvature signal at low redshift that remains inconclusive due to sparse data.
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$O_k$ null test with multi-task Gaussian processes: cosmic curvature and data compatibility
A curvature null test tailored to DESI BAO AP parameter and distance ratios via multi-task GPs finds dataset compatibility with a tentative ~2σ nonzero curvature signal at low redshift that remains inconclusive due to sparse data.