Holographic dark energy with time varying $c^2$ parameter

Abstract

We consider the holographic dark energy model in which the model parameter $c^2$ evolves slowly with time. First we calculate the evolution of EoS parameter as well as the deceleration parameter in this generalized version of holographic dark energy (GHDE). Depending on the parameter $c^2$, the phantom regime can be achieved earlier or later compare with original version of holographic dark energy. The evolution of energy density of GHDE model is investigated in terms of parameter $c^2$. We also show that the time-dependency of $c^2$ can effect on the transition epoch from decelerated phase to accelerated expansion. Finally, we perform the statefinder diagnostic for GHDE model and show that the evolutionary trajectories of the model in $s-r$ plane are strongly depend on the parameter $c^2$.

16 pages, 4 figures, accepted by Astrophys Space Sci

References in corpus (27)

• Cosmology and the Fate of Dilatation Symmetry
• A Dark Energy Model Characterized by the Age of the Universe
• A New Model of Agegraphic Dark Energy
• The holographic dark energy in non-flat Brans-Dicke cosmology
• Interacting holographic dark energy model in non-flat universe
• Interacting holographic generalized Chaplygin gas model
• Interacting Holographic Phantom
• Bulk-Brane Interaction and Holographic Dark Energy
• Holographic tachyon model of dark energy
• Restoring Holographic Dark Energy in Brane Cosmology
• Holographic Dark Energy in Braneworld Models with a Gauss-Bonnet Term in the Bulk. Interacting Behavior and the w =-1 Crossing
• Statefinder diagnosis for the interacting model of holographic dark energy
• Statefinder Diagnostic and w-w' Analysis for the Agegraphic Dark Energy Models without and with Interaction
• Interacting holographic dark energy
• A Tracker Solution for a Holographic Dark Energy Model
• The Cosmological Dynamics of Interacting Holographic Dark Energy Model
• Some Issues Concerning Holographic Dark Energy
• Thermodynamical Interpretation of the Interacting Holographic Dark Energy Model in a non-flat Universe
• Current constraints on interacting holographic dark energy
• Modified Holographic Dark Energy
• Holographic Gas as Dark Energy
• Cosmic Behavior, Statefinder Diagnostic and $w-w^{\prime }$ Analysis for Interacting NADE model in Non-flat Universe
• Statefinder Parameters for Tachyon Dark Energy Model
• Statefinder diagnostic and $w-w^{\prime }$ analysis for interacting polytropic gas dark energy model
• Generalized Chaplygin gas model: Cosmological consequences and statefinder diagnosis
• Holographic dark energy described at the Hubble length
• Spacetime Indeterminacy and Holographic Noise

Cited by in corpus (7)

• Cosmology of the interacting Tsallis holographic dark energy in $f(R,T)$ gravity framework
• Holographic Dark Energy with Time Varying n^2 Parameter in Non-Flat Universe
• Effects of particle creation rate in two-fluid interacting cosmologies
• A comprehensive analysis of Barrow holographic Chaplygin gas model reconstruction and its cosmological consequences
• G-corrected holographic dark energy model
• Reconstruction of Tsallis Holographic Dark Energy via Modified Non-Metric Gravity: An $f(Q,C)$ Approach
• First-order phase transitions and cosmic evolution: thermodynamic approach to generalized holographic dark energy