Convergence power spectra for ΛCDM and various MG models. Left panel: f(R) models with fR0 = ( − 10−4, −10−5, −10−6) and without neutrinos. Compared to ΛCDM, each MG model exhibits more lensing power, where the difference increases with the magnitude of fR0. The discrepancy is most pronounced on smaller scales for f5(R) and f6(R) but shifts towards larger scales for f4(R). Right panel: f5(R) models with varying neutrino mass sums. Neutrinos have the effect of suppressing structure growth across all scales, which is seen in the damping of the f5(R) curve with increasing mν. In particular, the combination of parameters (fR0, mν) = (10−5, 0.15 eV) reproduces ΛCDM in terms of second-order statistics to within 8% over three decades in scale. The convergent behaviour of the curves near ℓ = 105 reflects the resolution limit of our maps and particle noise that affects all of the models.
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