Singular fate of the universe in modified theories of gravity

Understand

In this paper we study the final fate of the universe in modified theories of gravity.

• As compared with general relativistic formulations, in these scenarios the Friedmann equation has additional terms which are relevant for low density epochs.
• We analyze the sort of future singularities to be found under the usual assumption the expanding Universe is solely filled with a pressureless component.
• We report our results using two schemes: one concerned with the behavior of curvature scalars, and a more refined one linked to observers.