2003/07/31 by Jerome Martin, Patrick Peter · 1 citation
Physics and Astronomy · #hep-th #astro-ph #gr-qc #hep-ph
paper · pdf · doi:10.1103/physrevd.68.103517
published as Phys.Rev. D68 (2003) 103517 · 17 pages, 12 figures, LaTeX-ReVTeX format, version to match Phys. Rev. D
arxiv created 2003/10/06 · arxiv updated 2009/12/01
We clarify the properties of the behavior of classical cosmological perturbations when the Universe experiences a bounce. This is done in the simplest possible case for which gravity is described by general relativity and the matter content has a single component, namely a scalar field in a closed geometry. We show in particular that the spectrum of scalar perturbations can be affected by the bounce in a way that may depend on the wave number, even in the large scale limit. This may have important implications for string motivated models of the early Universe.