Energy Bounds for Static Spherically Symmetric Spacetime in f (R, G) Gravity

The main purpose of this paper is to investigate energy bounds in the context of f (R, G) gravity. To meet this aim, we choose static spherically symmetric spacetime in f (R, G) gravity to develop the field equations. We select three different models of f (R, G) gravity, which are thoroughly discussed in the literature. Firstly, the inequalities are formulated using energy bounds and then viability of the considered models are checked respectively. Graphical analysis show that specific f (R, G) gravity models are satisfied under suitable values of model parameters. It is shown that in a certain case energy bounds are satisfied expect SEC, which supports the late time acceleration expansion of unverse.