157 citations · 188 across the 2 of their papers we have counts for
2 papers
astro-ph2007★ 31 cited
Unsuccessful cosmology with Modified Gravity Models
Antonio De Felice, Mark Hindmarsh
A class of Modified Gravity Models, consisting of inverse powers of linear combination of quadratic curvature invariants, is studied in the full parameter space. We find that singu…
astro-ph2006★ 157 cited
Ghosts, Instabilities, and Superluminal Propagation in Modified Gravity Models
Antonio De Felice, Mark Hindmarsh, Mark Trodden
We consider Modified Gravity models involving inverse powers of fourth-order curvature invariants. Using these models' equivalence to the theory of a scalar field coupled to a line…