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Journal Article

Bouncing cosmologies with dark matter and dark energy

MPS-Authors
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Wilson-Ewing,  Edward
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Fulltext (public)

1610.00938.pdf
(Preprint), 513KB

universe-03-00001.pdf
(Publisher version), 342KB

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There is no public supplementary material available
Citation

Cai, Y.-F., Marciano, A., Wang, D.-G., & Wilson-Ewing, E. (2017). Bouncing cosmologies with dark matter and dark energy. Universe, 3(1): 1. doi:10.3390/universe3010001.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002C-39A7-7
Abstract
We review matter bounce scenarios where the matter content is dark matter and dark energy. These cosmologies predict a nearly scale-invariant power spectrum with a slightly red tilt for scalar perturbations and a small tensor-to-scalar ratio. Importantly, these models predict a positive running of the scalar index, contrary to the predictions of the simplest inflationary and ekpyrotic models, and hence could potentially be falsified by future observations. We also review how bouncing cosmological space-times can arise in theories where either the Einstein equations are modified or where matter fields that violate the null energy condition are included.