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Uniqueness of current cosmic acceleration

Title
Uniqueness of current cosmic acceleration
Authors
Linder E.V.
Ewha Authors
Eric V. Linder
Issue Date
2010
Journal Title
Physical Review D - Particles, Fields, Gravitation and Cosmology
ISSN
1550-7998JCR Link
Citation
vol. 82, no. 6
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
One of the strongest arguments against the cosmological constant as an explanation of the current epoch of accelerated cosmic expansion is the existence of an earlier, dynamical acceleration, i.e. inflation. We examine the likelihood that acceleration is an occasional phenomenon, putting stringent limits on the length of any accelerating epoch due to minimally coupled dark energy between recombination and the recent acceleration; such an epoch must last less than 0.05 e-fold (at z>2) or the matter power spectrum is modified by more than 20%. © 2010 The American Physical Society.
DOI
10.1103/PhysRevD.82.063514
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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