Undulant Universe: Expansion with alternating eras of acceleration and deceleration
- 30 March 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 71 (6) , 063533
- https://doi.org/10.1103/physrevd.71.063533
Abstract
If the equation of state for “dark energy” varies periodically, the expansion of the Universe may have undergone alternating eras of acceleration and deceleration. We examine a specific form that survives existing observational tests, does not single out the present state of the Universe as exceptional, and suggests a future much like the matter-dominated past: a smooth expansion without a final inflationary epoch.Keywords
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