Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-11-25
Phys.Lett. B557 (2003) 135-138
Astronomy and Astrophysics
Astrophysics
10 pages LaTeX including 4 eps figures. Minor corrections in text
Scientific paper
10.1016/S0370-2693(03)00208-9
By studying the present cosmological data, particularly on CMB, SNeIA and LSS, we find that the future fate of the universe, for simple linear models of the dark energy equation-of-state, can vary between the extremes of (I) a divergence of the scale factor in as little as 7 Gyr; (II) an infinite lifetime of the universe with dark energy dominant for all future time; (III) a disappearing dark energy where the universe asymptotes as $t \to \infty$ to $a(t) \sim t^{2/3}$ {\it i.e.} matter domination. Our dreadful conclusion is that no amount of data from our past light-cone can select between these future scenarios.
Frampton Paul H.
Takahashi Tomo
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