Title: The Unified Parametrized Model for Dark Matter and Dark Energy
Abstract: The unified Parametrized model for dark matter and dark energy is constructed in this paper.By considering a ansatz for Eq.(4) related to the Hubble parameter, the unified parametrized equation of state is obtained and the corresponding relations between cosmological quantities and redshift z are gained on the basis of this equation.By calculation,the present value of dark energyand the present value of deceleration parameter as well as the transition redshift are compatible with supernova observations.In addition,the fate of Big Rip of universe is denied by analyzing the future evolution of dark energy in our manner.
Publication Year: 2005
Publication Date: 2005-01-01
Language: en
Type: article
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