2007/05/31 by L. Raul Abramo, Patrick Peter · 4 citations
Physics and Astronomy · #Advanced Differential Geometry Research #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #astro-ph #gr-qc #hep-th
paper · pdf · doi:10.1088/1475-7516/2007/09/001
published as JCAP0709:001,2007 · Replaced with version accepted to JCAP
arxiv created 2007/08/13 · openalex publication_date 2007/09/03 · arxiv updated 2009/12/01 · openalex created_date 2020/07/02 · openalex updated_date 2026/07/30
By requiring that a bounce is non-singular and that perturbations are well behaved at all times, we narrow the scope of possible models with one degree of freedom that can describe a bounce in the absence of spatial curvature. We compute the general properties of the transfer matrix of perturbations through the bounce, and show that spectral distortions of the Bardeen potential Φ are generically produced only for small wavelengths, although the spectrum of long wavelength curvature perturbations produced in a contracting phase gets propagated unaffected through such a bounce.