Both power-law and exponential f(G) models fit recent cosmological data better than standard ΛCDM according to information criteria, with the exponential model predicting a late-time return to deceleration.
Model selection and psychological theory: a discussion of the differences between the Akaike information criterion (AIC) and the Bayesian information criterion (BIC)
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Testing Gauss-Bonnet Gravity with DESI BAO Data
Both power-law and exponential f(G) models fit recent cosmological data better than standard ΛCDM according to information criteria, with the exponential model predicting a late-time return to deceleration.