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The Unified Equation of State for Dark Matter and Dark Energy | | Wei Wang
; Yuan-xing Gui
; Suhong Zhang
; Guanghai Guo
; Ying Shao
; | | Date: |
5 Apr 2005 | | Journal: | Mod.Phys.Lett. A20 (2005) 1443-1450 | | Subject: | astro-ph | | Abstract: | We assume that dark matter and dark energy satisfy the unified equation of state: $p=B(z)
ho$, with $p=p_{dE}$, $
ho=
ho_{dm}+
ho_{dE}$, where the pressure of dark matter $p_{dm}=0$ has been taken into account. A special function $B=-frac{A}{(1+z)^{alpha}}$ is presented, which can well describe the evolution of the universe. In this model, the universe will end up with a Big Rip. By further simple analysis, we know other choices of the function $B$ can also describe the universe but lead to a different doomsday. | | Source: | arXiv, astro-ph/0504094 | | Services: | Forum | Review | PDF | Favorites | |
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