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arXiv · 1711.08370

Fluctuations through a Vibrating Bounce

Robert Brandenberger·Qiuyue Liang·Rudnei O. Ramos·Siyi Zhou
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Abstract

We study the evolution of cosmological perturbations in a non-singular bouncing cosmology with a bounce phase which has superimposed oscillations of the scale factor. We identify length scales for which the final spectrum of fluctuations obtains imprints of the non-trivial bounce dynamics. These imprints in the spectrum are manifested in the form of damped oscillation features at scales smaller than a characteristic value and an increased reddening of the spectrum at all the scales as the number of small bounces increases.

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Robert Brandenberger, Qiuyue Liang, Rudnei O. Ramos, Siyi Zhou. 2017-11-22. Fluctuations through a Vibrating Bounce. https://doi.org/10.1103/physrevd.97.043504

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