Reconstruction of 5D Cosmological Model From Recent Observations

Abstract

We use a parameterized equation of state (EOS) of dark energy to a 5D Ricci-flat cosmological solution and suppose the universe contains two major components: dark matter and dark energy. Using the recent observational datasets: the latest 182 type Ia Supernovae Gold data, the 3-year WMAP CMB shift parameter and the SDSS baryon acoustic peak, we obtain the best fit values of the EOS and two major components' evolution. We find that the best fit EOS crossing -1 in the near past $z\simeq 0.07$, the present best fit value of $w_x(0)<-1$ and for this model the universe experiences the acceleration at about $z\simeq 0.5$.

7 pages, 3 figs, Accept by IJMPD

References in corpus (25)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• The Cosmological Constant and Dark Energy
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant
• Cosmological Constant - the Weight of the Vacuum
• Quintessence, Cosmic Coincidence, and the Cosmological Constant
• Exploring the Expansion History of the Universe
• Accelerating Universes with Scaling Dark Matter
• Phantom Energy and Cosmic Doomsday
• k-Inflation
• Dark Energy Constraints from the Cosmic Age and Supernova
• Accelerated expansion of the universe driven by tachyonic matter
• Kaluza-Klein Gravity
• Robust Dark Energy Constraints from Supernovae, Galaxy Clustering, and Three-Year Wilkinson Microwave Anisotropy Probe Observations
• New dark energy constraints from supernovae, microwave background and galaxy clustering
• Cosmological Parameters from Eigenmode Analysis of Sloan Digital Sky Survey Galaxy Redshifts
• A model independent approach to the dark energy equation of state
• Confronting Braneworld Cosmology with Supernova data and Baryon Oscillations
• Universe Models with a Variable Cosmological "Constant" and a "Big Bounce"
• Exact Global Solutions of Brane Universes and Big Bounce
• Five-Dimensional Cosmological Scaling Solution
• Induced Phantom and 5D Attractor Solution in Space-Time-Matter Theory
• Universe Evolution in a 5D Ricci-flat Cosmology
• Reconstruction of $5D$ Cosmological Models From Equation of State of Dark Energy