Propagating Cosmological Perturbations in a Bouncing Universe

Details Propagating Cosmological Perturbations in a Bouncing Universe Propagating Cosmological Perturbations in a Bouncing Universe

2004-02-10

arxiv.org/abs/hep-th/0402081v1

Physics

High Energy Physics

High Energy Physics - Theory

3 pages, 1 figure, to appear in the Tenth Marcel Grossmann Proceedings

Scientific paper

Using the simplest model for a bouncing universe, namely that for which gravity is described by pure general relativity, the spatial sections are positively curved and the matter content is a single scalar field, we obtain the transition matrix relating cosmological perturbation modes between the contracting and expanding phases. We show that this case provides a specific example in which this relation explicitely depends on the perturbation scale whenever the null energy condition (NEC) is close to be violated.

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