Scalar Perturbation and Stability of Ricci Dark Energy

Abstract

The Ricci dark energy (RDE) proposed to explain the accelerating expansion of the universe requires its parameter $\alpha <1$, whose value will determine the behavior of RDE. In this Letter, we study the scalar perturbation of RDE with and without matter in the universe, and we find that in both cases, the perturbation is stable if $\alpha >1/3$, which gives a lower bound for $\alpha$ theoretically.

6 pages, 10 figures

References in corpus (10)

• Infrared cut-off proposal for the Holographic density
• New infrared cut-off for the holographic scalar fields models of dark energy
• The holographic dark energy in non-flat Brans-Dicke cosmology
• Bulk-Brane Interaction and Holographic Dark Energy
• Statefinder Diagnosis for Ricci 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
• Some Issues Concerning Holographic Dark Energy
• Reconstructing Quintom from Ricci Dark Energy
• Holographic Gas as Dark Energy

Cited by in corpus (5)

• A New Class of Parametrization for Dark Energy without Divergence
• Modified holographic dark energy in DGP brane world
• Correspondence between Ricci and other dark energies
• Thermodynamic Origin of the Cardassian Universe
• Thawing k-essence dark energy in the PAge space