Analysis of generalized ghost version of pilgrim dark energy

Abstract

The proposal of pilgrim dark energy is based on the speculation that phantom-like dark energy possesses enough resistive force to preclude the black hole formation in the later universe. We explore this phenomenon by assuming the generalized ghost version of pilgrim dark energy. We find that most of the values of the interacting (ξ 2 ) as well as pilgrim dark energy (u) parameters push the equation of state parameter towards phantom region. The squared speed of sound shows that this model remains stable in most of the cases of ξ 2 and u. We also develop ω Λ − ω ′ Λ plane and observe that this model corresponds to thawing as well as freezing regions. Finally, it is shown that the non-interacting and interacting generalized ghost versions of pilgrim dark energy correspond to ΛCDM limit on the statefinder plane.

Cosmological analysis of reconstructed $${\mathcal {F}}(T,T_{\mathcal {G}})$$ F ( T , T G ) models

“…Sharif and Jawad [17] analyzed GGPDE model by investigating its cosmological consequences in general relativity. Our results are consistent with them for non-interacting case with μ = 1.55 and ν = 1.91.…”

“…The energy density of PDE model is defined as ρ = where z is the redshift parameter. Also, we consider the values of model parameters as μ = 1.55, ν = 1.91 [17,21]. We take the remaining parameters as a 0 = 1, c 1 = 0.9 and c 2 = −0.004.…”

“…The generalized ghost DE model after involving PDE parameter is named as generalized ghost PDE (GGPDE) model. Sharif and Jawad [17] examined flat FRW model for interacting as well as noninteracting GGPDE model and found that this model fulfills PDE phenomenon. The reconstruction technique is the most suitable approach to develop an appropriate DE model which successfully draws the picture of cosmic history.…”

Analysis of generalized ghost pilgrim dark energy in non-flat FRW universe

“…Upto now, this model was investigated by different cosmological parameters such as EoS parameter, deceleration, ω −ω , statefinder and squared speed of sound etc. [26,[43][44][45][46]. Its generalized version in terms of PDE is defined as follows [26] …”

“…In addition, we worked on PDE models interacting with cold dark matter (CDM) and pointed different ways in order to meet the PDE phenomenon [24][25][26]. In this work, the generalized ghost version of PDE model so called GGPDE interacting with CDM is considered in non-flat universe.…”