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arXiv · hep-th/0307077

Parametric amplification of metric fluctuations through a bouncing phase

Jerome Martin·Patrick Peter
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Abstract

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.

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Jerome Martin, Patrick Peter. 2003-10-06. Parametric amplification of metric fluctuations through a bouncing phase. https://doi.org/10.1103/physrevd.68.103517

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