DESI DR2 data reveals a mild mismatch for flat LambdaCDM in CMB-calibrated fits, with evolving dark energy models like CPL improving the fit in a dataset-dependent manner sensitive to supernova calibration residuals at the 0.01-0.02 mag level.
no-go” result of Vikman [ 80]. Consequently, persistent evidence for a crossing motivates at least one of: (i) multiple fields (“quintom
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Dark Energy After DESI DR2: Observational Status, Reconstructions, and Physical Models
DESI DR2 data reveals a mild mismatch for flat LambdaCDM in CMB-calibrated fits, with evolving dark energy models like CPL improving the fit in a dataset-dependent manner sensitive to supernova calibration residuals at the 0.01-0.02 mag level.