Cosmological constraints on new agegraphic dark energy

2007/08/31 by Hao Wei, Rong-Gen Cai · 5 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Galaxies: Formation, Evolution, Phenomena #astro-ph #gr-qc #hep-th

paper · pdf · doi:10.1016/j.physletb.2008.03.048

published as Phys.Lett.B663:1-6,2008 · 11 pages, 2 tables, 3 figures, revtex4; v2: discussions added, Phys. Lett. B in press; v3: published version

openalex publication_date 2008/04/02 · arxiv created 2008/05/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/03

Abstract

In this work, we consider the cosmological constraints on the new agegraphic dark energy (NADE) proposed in arXiv: 0708.0884, by using the observational data of type Ia supernovae (SNIa), the shift parameter from cosmic microwave background (CMB) and the baryon acoustic oscillation (BAO) peak from large scale structures (LSS). Thanks to its special analytic features in the radiation-dominated and matter-dominated epochs, NADE is a single-parameter model in practice because once the single model parameter n is given, all other physical quantities of NADE can be determined correspondingly. The joint analysis gives the best-fit value (with 1σ uncertainty) n=2.716−0.109+0.111, and the derived Ωm0, Ωq0 and wq0 (with 1σ uncertainties) are 0.295−0.020+0.020, 0.705−0.020+0.020 and −0.794−0.005+0.006, respectively. In addition, we find that the coincidence problem could be solved naturally in the NADE model provided that n is of order unity.

Citations

• A New Model of Agegraphic Dark Energy
• Interacting energy components and observational H(z) data
• Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Temperature Analysis
• Cosmological parameter analysis including SDSS Lyαforest and galaxy bias: Constraints on the primordial spectrum of fluctuations, neutrino mass, and dark energy
• Constraints on linear negative potentials in quintessence and phantom models from recent supernova data
• Observational constraints on dark energy and cosmic curvature

Cited by

• Interacting entropy-corrected new agegraphic dark energy in Brans–Dicke cosmology
• Interacting agegraphic dark energy models in non-flat universe
• BRANE–BULK ENERGY EXCHANGE AND AGEGRAPHIC DARK ENERGY
• The generalized second law in irreversible thermodynamics for the interacting dark energy in a non-flat FRW universe enclosed by the apparent horizon
• Holography, UV/IR Relation, Causal Entropy Bound, and Dark Energy