Braneworld Inspires Cosmological Implications of Barrow Holographic Dark Energy

Universe

Nadeem Azhar¹  Shamaila Rani¹ 

[1] Department of Mathematics, Lahore-Campus, COMSATS University Islamabad, Lahore 54000, Pakistan;

关键词: DGP braneworld model;    barrow entropy;    barrow holographic dark energy model;    hubble horizon;    event horizon;    generalized second law of thermodynamics;   

DOI  :  10.3390/universe7080268

来源: DOAJ

【 摘 要 】

In the present manuscript, the evolution of the cosmic parameters and planes are being investigated in the framework of the DGP braneworld model. In this scenario, the interaction $\mathsf{\Gamma }$ between the Barrow holographic dark energy model (whose infrared cutoff scale is set by Hubble and event horizons) and pressureless dark matter are considered. We check the behavior of different cosmological parameters such as Hubble, equation of state, deceleration and squared speed of sound from the early matter-dominated era until the late-time acceleration. It is found that the range of Hubble parameter lies in the interval ${95}_{-35}^{+35}$ (for Hubble horizon) and ${97}_{-23}^{+23}$ (for event horizon). For both horizons, the equation of state parameter favors the phantom dominant era as well as the $\mathsf{\Lambda }$CDM model while the deceleration parameter illustrates the accelerated expansion of the universe. Furthermore, stability of the underlying model is found through squared speed of sound. Furthermore, it is observed that $\omega -{\omega }_{\vartheta }^{\prime }$ plane corresponds to freezing and thawing region for Hubble and event horizons, respectively. Furthermore, statefinder plane shows the $\mathsf{\Lambda }$CDM and Chaplygin gas behavior for both models. Finally, we investigate the thermodynamical nature of the underlying model through Barrow entropy as horizon entropy and found validity for both horizons.

【 授权许可】

Unknown