Anisotropic singularities in modified gravity models

Michele Ferraz Figueiro, Alberto Saa

We show that the common singularities present in generic modified gravity models governed by actions of the type $S=\int d^{4}x\sqrt{-g}f(R,\varphi ,X)$, with $X= -{1/2}g^{ab}\partial_aϕ\p…