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• W2046302500 abstract "The 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 Wilkinson Microwave Anisotropy Probe (WMAP) observations, and the baryon acoustic oscillation (BAO) measurement from the Sloan Digital Sky Survey (SDSS). The joint analysis gives the fit results in $1mathrm{text{ensuremath{-}}}ensuremath{sigma}$: $c={0.91}_{ensuremath{-}0.18}^{+0.26}$ and ${ensuremath{Omega}}_{mathrm{m}0}=0.29ifmmodepmelsetextpmfi{}0.03$. That is to say, though the possibility of $c<1$ is more favored, the possibility of $c>1$ cannot 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." @default.
• W2046302500 created "2016-06-24" @default.
• W2046302500 creator A5017232473 @default.
• W2046302500 creator A5020810072 @default.
• W2046302500 date "2007-07-06" @default.
• W2046302500 modified "2023-10-02" @default.
• W2046302500 title "Constraints on holographic dark energy from the latest supernovae, galaxy clustering, and cosmic microwave background anisotropy observations" @default.
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• W2046302500 doi "https://doi.org/10.1103/physrevd.76.023502" @default.
• W2046302500 hasPublicationYear "2007" @default.
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