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자연과학대학
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Journal papers
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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
1550-7998
Citation
Physical Review D - Particles, Fields, Gravitation and Cosmology vol. 82, no. 6
Indexed
SCIE; SCOPUS
Document Type
Article
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
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