Probing Ricci dark energy model with perturbations by using WMAP seven-year cosmic microwave background measurements, BAO and Type Ia supernovae

Abstract

In this paper, we investigate the Ricci dark energy model with perturbations through the joint constraints of current cosmological data sets from dynamical and geometrical perspectives. We use the full cosmic microwave background information from WMAP seven-year data, the baryon acoustic oscillations from the Sloan Digital Sky Survey and the Two Degree Galaxy Redshift Survey, and type Ia supernovae from the Union2 compilation of the Supernova Cosmology Project Collaboration. A global constraint is performed by employing the Markov chain Monte Carlo method. With the best-fitting results, we show the differences of cosmic microwave background power spectra and background evolutions for the cosmological constant model and Ricci dark energy model with perturbations.

8 pages, 8 figures, 1 table

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Cited by in corpus (8)

• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• A New Class of Parametrization for Dark Energy without Divergence
• Cosmology with Ricci dark energy
• Unified Dark Fluid with Constant Adiabatic Sound Speed: Including Entropic Perturbations
• Constraints to Holographic Dark Energy Model via Type Ia Supernovae, Baryon Acoustic Oscillation and WMAP
• Instability in interacting dark sector: An appropriate Holographic Ricci dark energy model
• Holographic energy density, dark energy sound speed, and tensions in cosmological parameters: $H_0$ and $S_8$
• "Microscopic" approach to the Ricci dark energy