Name: Hayato Motohashi
 Institution: The University of Tokyo
 Title: Matter density fluctuation and massive neutrinos in f(R) gravity
 Key Words: modified gravity, density fluctuation, massive neutrinos
 Abstract: The effect of massive neutrinos on matter power spectrum is discussed in the context of f(R)
gravity. It is shown that the anomalous growth of density fluctuations on small scales due to the
scalaron force can be compensated by free streaming of neutrinos.