In an f(R, L_m) gravity model constrained by distance modulus data via chi-squared and MCMC, the authors report earlier nonlinear structure formation and higher matter-radiation equality redshift than Lambda CDM, with matching recombination redshift.
Future CMB experiments such as CMB-S4 and LiteBIRD can offer enhanced sensitivity to these subtle features and test the extended visibility function predicted by the model
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Comparative Study of Early-Universe Epochs in an $f(R,L_m)$ Gravity Model with Effective Curvature--Matter Interaction and $\Lambda$CDM Cosmology
In an f(R, L_m) gravity model constrained by distance modulus data via chi-squared and MCMC, the authors report earlier nonlinear structure formation and higher matter-radiation equality redshift than Lambda CDM, with matching recombination redshift.