Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-11-17
Phys.Rev. D69 (2004) 063511
Astronomy and Astrophysics
Astrophysics
12 pages, 12 figures
Scientific paper
10.1103/PhysRevD.69.063511
A broad class of dark energy models, which have been proposed in attempts at solving the cosmological constant problems, predict a late time variation of the equation of state with redshift. The variation occurs as a scalar field picks up speed on its way to negative values of the potential. The negative potential energy eventually turns the expansion into contraction and the local universe undergoes a big crunch. In this paper we show that cross-correlations of the CMB anisotropy and matter distribution, in combination with other cosmological data, can be used to forecast the imminence of such cosmic doomsday.
Garriga Jaume
Pogosian Levon
Vachaspati Tanmay
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