Spatial Ricci scalar dark energy model

Abstract

Inspired by holographic principle, we suggest that the density of dark energy is proportional to the spatial Ricci scalar curvature (SRDE). Such model is phenomenologically viable. The best fit values of its parameters at 68% confidence level are found to be: ${\Omega }_{m0}=0.259\pm 0.016$ and $\alpha =0.261\pm 0.0122$, constrained from the Union+CFA3 sample of 397 SNIa and the BAO measurement. We find the equation of state of SRDE crosses -1 at $z\simeq -0.14$. The present values of the deceleration parameter $q(z)$ for SRDE is found to be $q_{z=0}\sim -0.85$. The phase transition from deceleration to acceleration of the Universe for SRDE occurs at the redshift $z_{q=0}\sim 0.4$. After studying on the perturbation of each component of the Universe, we show that the matter power spectra and cosmic microwave background temperature anisotropy is slightly affected by SRDE, compared with $\Lambda$CDM.

9 pages, 7 figures

References in corpus (17)

• Dynamics of dark energy
• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• Improved Dark Energy Constraints from ~100 New CfA Supernova Type Ia Light Curves
• A Holographic Dark Energy Model from Ricci Scalar Curvature
• Horava-Lifshitz Cosmology
• Non-minimally coupled canonical, phantom and quintom models of holographic dark energy
• Holographic dark energy with varying gravitational constant
• Critical comments on the paper "Crossing $\omega =-1$ by a single scalar field on a Dvali-Gabadadze-Porrati brane" by H Zhang and Z-H Zhu [Phys.Rev.D75,023510(2007)]
• Crossing $w=-1$ by a single scalar on a Dvali-Gabadadze-Porrati brane
• First Cosmological Constraints on Dark Energy from the Radial Baryon Acoustic Scale
• Origin of holographic dark energy models
• Tachyon cosmology, supernovae data and the Big Brake singularity
• Geometrical diagnostic for purely kinetic k-essence dark energy
• Holographic Dark Energy Model and Scalar-Tensor Theories
• Crossing the phantom divide line in the Holographic dark energy model in a closed universe
• A Comment or two on Holographic Dark Energy
• Holographic dark energy interacting with dark matter in a Closed Universe

Cited by in corpus (13)

• On holographic dark-energy models
• Interacting dark matter and modified holographic Ricci dark energy induce a relaxed Chaplygin gas
• Cosmology with Ricci dark energy
• Interacting modified holographic Ricci dark energy model and statefinder diagnosis in flat universe
• Forecasting cosmological parameter constraints from near-future space-based galaxy surveys
• Restrictions on purely kinetic k-essence
• Probing Ricci dark energy model with perturbations by using WMAP seven-year cosmic microwave background measurements, BAO and Type Ia supernovae
• Non-adiabatic perturbations in Ricci dark energy model
• Stability analysis of an interacting holographic dark energy model
• Holographic Ricci dark energy and generalized second law
• A unification of RDE model and XCDM model
• Scalar Field, Four Dimensional Spacetime Volume and the Holographic Dark Energy
• "Microscopic" approach to the Ricci dark energy