Undulant Universe: Expansion with alternating eras of acceleration and deceleration

2004/12/01 by Gabriela Barenboim, Olga Mena, Olga Mena Requejo +1
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph #hep-ph

paper · pdf · doi:10.1103/physrevd.71.063533

published as Phys.Rev.D71:063533,2005 · 4 pages, 4 figures, uses RevTeX

arxiv created 2004/12/01 · openalex publication_date 2005/03/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01

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.

Citations

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