New holographic dark energy model inspired by the DGP braneworld

Abstract

The energy density of the holographic dark energy is based on the area law of entropy, and thus any modification of the area law leads to a modified holographic energy density. Inspired by the entropy expression associated with the apparent horizon of a Friedmann-Robertson-Walker (FRW) Universe in DGP braneworld, we propose a new model for the holographic dark energy in the framework of DGP brane cosmology. We investigate the cosmological consequences of this new model and calculate the equation of state parameter by choosing the Hubble radius, $L=H^{-1}$, as the system's IR cutoff. Our study show that, due to the effects of the extra dimension (bulk), the identification of IR-cutoff with Hubble radius, can reproduce the present acceleration of the Universe expansion. This is in contrast to the ordinary holographic dark energy in standard cosmology which leads to the zero equation of state parameter in the case of choosing the Hubble radius as system's IR cutoff in the absence of interaction between dark matter and dark energy.

11 pages

References in corpus (15)

• Dynamics of dark energy
• Thermodynamic Behavior of Friedmann Equation at Apparent Horizon of FRW Universe
• Unified First Law and Thermodynamics of Apparent Horizon in FRW Universe
• Friedmann Equations of FRW Universe in Scalar-tensor Gravity, f(R) Gravity and First Law of Thermodynamics
• Thermodynamic route to Field equations in Lanczos-Lovelock Gravity
• Hawking Radiation of Apparent Horizon in a FRW Universe
• Thermodynamical Properties of Apparent Horizon in Warped DGP Braneworld
• Thermodynamics of Apparent Horizon in Brane World Scenario
• Improved Constraints on the Acceleration History of the Universe and the Properties of the Dark Energy
• Interacting holographic dark energy
• Power-law corrections to entanglement entropy of horizons
• Cosmological constraints on interacting dark energy with redshift-space distortion after Planck data
• Holographic dark energy in a universe with spatial curvature and massive neutrinos: a full Markov Chain Monte Carlo exploration
• Holographic Ricci dark energy in Randall-Sundrum braneworld: Avoidance of big rip and steady state future
• Dynamics of holographic vacuum energy in the DGP model

Cited by in corpus (8)

• Tsallis holographic dark energy in the brane cosmology
• The Effect of GUP to Massive Vector and Scalar Particles Tunneling From a Warped DGP Gravity Black Hole
• Holographic dark energy in modified Barrow cosmology
• On An Interacting New Holographic Dark Energy Model: observational constraints
• An interacting New Holographic Dark Energy in the framework of fractal cosmology
• A new holographic dark energy model in Brans-Dicke theory with logarithmic scalar field
• An interacting holographic dark energy model within an induced gravity brane
• Barrow Holographic Dark Energy in Brane World Cosmology