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Forecasting Cosmic Doomsday from CMB/LSS Cross-Correlations

Jaume Garriga·Levon Pogosian·Tanmay Vachaspati
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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 CMB 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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Jaume Garriga, Levon Pogosian, Tanmay Vachaspati. 2003-11-17. Forecasting Cosmic Doomsday from CMB/LSS Cross-Correlations. https://doi.org/10.1103/physrevd.69.063511

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