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Evolution of Holographic Dark Energy in Interacting Modified Chaplygin Gas Model |
| WANG Cong, WU Ya-Bo, LIU Fei |
| Department of Physics, Liaoning Normal University, Dalian 116029 |
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| Cite this article: |
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WANG Cong, WU Ya-Bo, LIU Fei 2009 Chin. Phys. Lett. 26 029801 |
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Abstract We investigate the modified Chaplygin gas (MCG) with interaction between holographic dark energy proposed by Li and dark matter. In this model, evolution of the universe is described in detail, which is from deceleration to acceleration. Specifically, the evolutions of related cosmological quantities such as density parameter, the equation of state of holographic dark energy, deceleration parameter and transition redshift are discussed. Moreover, we also give their present values which are consistent with the lately observations. Furthermore, the results given by us show such a model can accommodate a transition of the dark energy from a normal state wX>-1 to wX<-1 phantom regimes.
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| Keywords:
98.80.Es
98.80.Jk
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Received: 30 July 2008
Published: 20 January 2009
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| PACS: |
98.80.Es
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(Observational cosmology (including Hubble constant, distance scale, cosmological constant, early Universe, etc))
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98.80.Jk
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(Mathematical and relativistic aspects of cosmology)
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