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  Bouncing cosmologies with dark matter and dark energy

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.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-39A7-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-8796-7
Genre: Journal Article

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1610.00938.pdf (Preprint), 513KB
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 Creators:
Cai, Yi-Fu, Author
Marciano, Antonino, Author
Wang, Dong-Gang, Author
Wilson-Ewing, Edward1, Author              
Affiliations:
1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24014              

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Free keywords: Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO,General Relativity and Quantum Cosmology, gr-qc,High Energy Physics - Theory, hep-th
 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.

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 Dates: 2016-10-042016-12-132017
 Publication Status: Published in print
 Pages: 16 pages, 1 figure, v2: Discussion extended and clarifications added. Invited review for special edition of Universe
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 Identifiers: arXiv: 1610.00938
DOI: 10.3390/universe3010001
URI: http://arxiv.org/abs/1610.00938
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Title: Universe
Source Genre: Journal
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Pages: - Volume / Issue: 3 (1) Sequence Number: 1 Start / End Page: - Identifier: -