Abstract
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 cosmic microwave background anisotropy and matter distribution, in combination with other cosmological data, can be used to forecast the imminence of such cosmic doomsday.
Original language | English (US) |
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Pages (from-to) | 11 |
Number of pages | 1 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volume | 69 |
Issue number | 6 |
DOIs | |
State | Published - 2004 |
Externally published | Yes |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)