Forecasting cosmic doomsday from CMB-LSS cross-correlations

Jaume Garriga, Levon Pogosian, Tanmay Vachaspati

Research output: Contribution to journalArticle

32 Citations (Scopus)

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 languageEnglish (US)
Article number063511
JournalPhysical Review D
Volume69
Issue number6
DOIs
StatePublished - 2004
Externally publishedYes

Fingerprint

large-scale structure of the universe
forecasting
cross correlation
dark energy
contraction
equations of state
universe
potential energy
scalars
microwaves
anisotropy
expansion

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Forecasting cosmic doomsday from CMB-LSS cross-correlations. / Garriga, Jaume; Pogosian, Levon; Vachaspati, Tanmay.

In: Physical Review D, Vol. 69, No. 6, 063511, 2004.

Research output: Contribution to journalArticle

Garriga, Jaume ; Pogosian, Levon ; Vachaspati, Tanmay. / Forecasting cosmic doomsday from CMB-LSS cross-correlations. In: Physical Review D. 2004 ; Vol. 69, No. 6.
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