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We investigate the ghost model of dark energy in the framework of DGP braneworld. We explore the cosmological consequences of this model by determining the equation of state parameter,

The current acceleration of the universe expansion is strongly confirmed by the type Ia supernova observations [

An interesting model for probing the dynamical DE model is the ghost dark energy (GDE) model proposed in [

Independent of the DE puzzle, for explanation of the cosmic acceleration, special attention is also paid to extra dimensional theories, in which our universe is realized as a

This paper is organized as follows. In Section

In the DGP cosmology, a homogeneous, spatially flat, and isotropic

The fractional energy density parameters are defined as

We know that (i) our universe is in a DE dominated phase and (ii) our universe that is our habitat is stable. These imply that any variable DE model should result in a stable DE dominated universe. So it is worth investigating the stability of the GDE in DGP braneworld against perturbation. The intended indicator for checking the stability of a proposed DE model is to study the behavior of the squared sound speed (

On the other sides, Sahni et al. [

We start to obtain the cosmological parameters for GDE in the DGP braneworld by ignoring the interaction term

The evolution of

The evolution of

The evolution of the deceleration parameter

The evolution of

The evolution of the squared of sound speed

The graphical behavior of the statefinder parameters

The evolution of the statefinder parameter

The evolution of the statefinder parameter

Let us study the trajectory in the statefinder plane and analyze this model from the statefinder viewpoint. For this purpose, we plot the statefinder diagram in the

The evolution of the statefinder parameter

The evolution of the statefinder parameter

The

The

Differentiating the modified Friedmann equation (

To illustrate the cosmological consequences of the interacting GDE in the DGP braneworld, we plot their evolution in terms of redshift parameter

The evolution of

The evolution of

The evolution of the deceleration parameter

The evolution of the deceleration parameter

The evolution of the squared of sound speed

We obtain

The evolution of the statefinder parameter

The evolution of the statefinder parameter

The evolution of the statefinder parameter

The evolution of the statefinder parameter

The

We have made a versatile study on both noninteracting and interacting GDE in the framework DGP model through well-known cosmological parameters as well as planes. We summarize our results as follows. For noninteracting case, we have found that the density parameter tends to zero at the early universe while at the late time we have

For interacting case, we find that the density and the deceleration parameters as well as the EoS parameter are consistent with observational data. We have seem that as the value of

No data were used to support this study.

The authors declare that they have no conflicts of interest.

The authors thank Shiraz University Research Council. This work has been supported financially by Research Institute for Astronomy & Astrophysics of Maragha (RIAAM), Iran.