We discuss the modified gravity which may produce the current cosmic acceleration of the universe and eliminates the need for dark energy. It is shown that such models where the action quickly grows with the decrease of the curvature define the FRW universe with the minimal curvature. It is required the infinite time to reach the minimal curvature during the universe evolution. It is demonstrat...

In the formalism of generalized holographic dark energy (HDE), cut-off is to depend upon LIR=LIRLp,L?p,L¨p,?,Lf,L?f,?,a with Lp and Lf being particle horizon future horizon, respectively (moreover, a scale factor Universe). Based on such formalism, in present paper, we show that wide class (DE) models can be regarded as different candidates for HDE family, respective cut-offs. This thought symm...

Observations exploring the contemporary cosmic acceleration have sparked interest in dark energy models possessing equations of state with w < −1. We review how the cosmic expansion history of a Dvali–Gabadadze–Porrati (DGP) braneworld model with a standard brane cosmological constant can mimic that of ordinary 4–dimensional gravity with w < −1 “phantom” dark energy for observationally relevant...