Constraints on Holographic Dark Energy from Latest Supernovae, Galaxy Clustering, and Cosmic Microwave Background Anisotropy Observations

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dc.creatorZhang, Xin
dc.creatorWu, Feng-Quan
dc.date2007-01-14
dc.date2007-06-05
dc.date.accessioned2026-07-07T11:00:41Z
dc.date.available2026-07-07T11:00:41Z
dc.descriptionThe holographic dark energy model is proposed by Li as an attempt for probing the nature of dark energy within the framework of quantum gravity. The main characteristic of holographic dark energy is governed by a numerical parameter $c$ in the model. The parameter $c$ can only be determined by observations. Thus, in order to characterize the evolving feature of dark energy and to predict the fate of the universe, it is of extraordinary importance to constrain the parameter $c$ by using the currently available observational data. In this paper, we derive constraints on the holographic dark energy model from the latest observational data including the gold sample of 182 Type Ia supernovae (SNIa), the shift parameter of the cosmic microwave background (CMB) given by the three-year {\it Wilkinson Microwave Anisotropy Probe} ({\it WMAP}) observations, and the baryon acoustic oscillation (BAO) measurement from the Sloan Digital Sky Survey (SDSS). The joint analysis gives the fit results in 1-$σ$: $c=0.91^{+0.26}_{-0.18}$ and $Ω_{\rm m0}=0.29\pm 0.03$. That is to say, though the possibility of $c<1$ is more favored, the possibility of $c>1$ can not be excluded in one-sigma error range, which is somewhat different from the result derived from previous investigations using earlier data. So, according to the new data, the evidence for the quintom feature in the holographic dark energy model is not as strong as before.
dc.description22 pages, 8 figures; accepted for publication in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/astro-ph/0701405
dc.identifierhttp://arxiv.org/abs/astro-ph/0701405
dc.identifierPhys.Rev.D76:023502,2007
dc.identifierdoi:10.1103/PhysRevD.76.023502
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187735
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleConstraints on Holographic Dark Energy from Latest Supernovae, Galaxy Clustering, and Cosmic Microwave Background Anisotropy Observations
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