Smooth tanh Lambda_s CDM is statistically indistinguishable from flat Lambda-CDM with DES-SN5YR+DESI 2024 BAO+RSD, and the transition sharpness Delta remains prior-dominated.
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Catching the Cosmic Sign Flip: Background and Growth Tests of Smooth Sign Switching Lambda_s CDM
Smooth tanh Lambda_s CDM is statistically indistinguishable from flat Lambda-CDM with DES-SN5YR+DESI 2024 BAO+RSD, and the transition sharpness Delta remains prior-dominated.