Cosmological constraints on the generalized holographic dark energy
arXiv:1203.4907 · doi:10.1140/epjc/s10052-011-1800-5
Abstract
We use the Markov ChainMonte Carlo method to investigate global constraints on the generalized holographic (GH) dark energy with flat and non-flat universe from the current observed data: the Union2 dataset of type supernovae Ia (SNIa), high-redshift Gamma-Ray Bursts (GRBs), the observational Hubble data (OHD), the cluster X-ray gas mass fraction, the baryon acoustic oscillation (BAO), and the cosmic microwave background (CMB) data. The most stringent constraints on the GH model parameter are obtained. In addition, it is found that the equation of state for this generalized holographic dark energy can cross over the phantom boundary wde =-1.
14 pages, 5 figures. arXiv admin note: significant text overlap with arXiv:1105.1868
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- Observational constraints on non-flat dynamical dark energy cosmological models
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- Time variable cosmological constant of holographic origin with interaction in Brans-Dicke theory