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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/12379
Forecasting cosmic doomsday from CMB-LSS cross-correlations.
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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.
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GARRIGA TORRES, Jaume, POGOSIAN, Levon and VACHASPATI, T. (Tanmay). Forecasting cosmic doomsday from CMB-LSS cross-correlations. Physical Review D. 2004. Vol. 69, num. 6, pags. 063511-1-063511-11. ISSN 0556-2821. [consulted: 17 of June of 2026]. Available at: https://hdl.handle.net/2445/12379