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Weighing Neutrinos in f(R) Gravity in Light of BICEP2

Zhou, Xiao-Ying; He, Jian-Hua

We constrain the neutrino mass in f(R) gravity using the latest observations from the Planck, BAO and BICEP2 data. We find that the measurement on the B-modes can break the degeneracy between the massive neutrinos and the f(R) gravity. We find a non-zero value of the Compton wavelengths B₀ at a 68% confidence level for the f(R) model in…