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Article Dans Une Revue Physical Review D Année : 2003

Parametric amplification of metric fluctuations through a bouncing phase

Résumé

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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hal-04111170 , version 1 (09-06-2023)

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Jérôme Martin, Patrick Peter. Parametric amplification of metric fluctuations through a bouncing phase. Physical Review D, 2003, 68, ⟨10.1103/PhysRevD.68.103517⟩. ⟨hal-04111170⟩
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