Holographic dark energy in the DGP braneworld with GO cutoff

Understand

We consider the holographic dark energy (HDE) model in the framework of DGP braneworld with Granda-Oliveros infrared (IR) cutoff, $L=(\alpha \dot{H}+\beta H^2)^{-1/2}$.

• With this choice for IR cutoff, we are able to derive evolution of the cosmological parameters such as the equation of state and the deceleration parameters, $w$ and $q$, as the functions of the redshift parameter $z$.
• As far as we know, most previous models of HDE presented in the literatures, do not gives analytically $\omega=\omega(z)$ and $q=q(z)$.
• We plot the evolution of these parameters versus $z$ and discuss that the results are compatible with the recent observations.