Constraints on the holographic dark energy model via type Ia supernovae, baryon acoustic oscillation, and WMAP7

2012/05/10 by Lixin Xu · 2 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Galaxies: Formation, Evolution, Phenomena #astro-ph.CO #hep-th

paper · pdf · doi:10.1103/physrevd.85.123505

published as Physical Review D 85, 123505 (2012) · 8 pages, 4 figures, accepted for publication in Phys. Rev. D. arXiv admin note: text overlap with arXiv:1112.3701

arxiv created 2012/05/10 · openalex publication_date 2012/06/04 · arxiv updated 2012/06/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this paper, the holographic dark energy model, where the future event horizon is taken as an IR cutoff, is confronted by using currently available cosmic observational data sets which include type Ia supernovae, baryon acoustic oscillation, and cosmic microwave background radiation from full information of WMAP 7-yr data. Via the Markov chain Monte Carlo method, we obtain the values of model parameter c=0.696_\ensuremath-0.0737\ensuremath-0.132\ensuremath-0.190^{+0.0736+0.159+0.264} with 1, 2, 3\ensuremathσ regions. Therefore, one can conclude that at at least 3\ensuremathσ level the future Universe will be dominated by phantom-like dark energy. It is not consistent with positive energy condition, however this condition must be satisfied to derive the holographic bound. It implies that the current cosmic observational data points disfavor the holographic dark energy model.

Citations

• Unified Dark Fluid with Constant Adiabatic Sound Speed and Cosmic Constraints
• Measurements of Ω and Λ from 42 High‐Redshift Supernovae
• ΛXCDM: a cosmon model solution to the cosmological coincidence problem?
• Cosmological Constant - the Weight of the Vacuum
• The cosmological constant and dark energy
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• The Case for a Positive Cosmological Lambda-term

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