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Extended Analysis on New Generalized Chaplygin Gas |
| WANG Jun, WU Ya-Bo, WANG Di, YANG Wei-Qiang |
| Department of Physics, Liaoning Normal University, Dalian 116029 |
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WANG Jun, WU Ya-Bo, WANG Di et al 2009 Chin. Phys. Lett. 26 089801 |
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Abstract We extend the study of the new generalized Chaplygin gas (NGCG) based on [J. Cosmol. Astropart. Phys. 0601 (2006) 003]. Specifically, we not only discuss the change rates of the energy densities and the energy transfer of this model, but also perform the Om diagnostic to differentiate the ΛCDM model from the NGCG and the GCG models. Furthermore, in order to consider the influence of dark energy on structure formation, we also present the evolution of the growth index in this scenario with interaction.
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98.80.Es
98.80.Jk
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Received: 09 April 2009
Published: 30 July 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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