Perturbations Propagation in a Bouncing Universe

Details Perturbations Propagation in a Bouncing Universe Perturbations Propagation in a Bouncing Universe

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005tmgm.meet.1724g&link_type=abstract

THE TENTH MARCEL GROSSMANN MEETING PART A On Recent Developments in Theoretical and Experimental General Relativity, Gravitation

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We study some bouncing universe models dominated by a specific class of hydrodynamical fluids, and show that the cosmological perturbations propagate smoothly through a general relativistic bounce. We also find that the purely adiabatic modes exhibit a divergence that is compensated in the total Bardeen potential by inclusion of the entropy perturbations, which can never be neglected.

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