Garriga Torres, JaumePogosian, LevonVachaspati, T. (Tanmay)2010-05-062010-05-0620040556-2821https://hdl.handle.net/2445/12379A 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.11 p.application/pdfeng(c) The American Physical Society, 2004CosmologiaCosmologyinfo:eu-repo/semantics/article520521info:eu-repo/semantics/openAccess