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Loop Quantum Cosmology, Modified Gravity and Extra Dimensions

Bouncing Cosmologies with Dark Matter and Dark Energy

CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Chinese Academy of Sciences, 230026 Hefei, China
Department of Physics & Center for Field Theory and Particle Physics, Fudan University, 200433 Shanghai, China
Leiden Observatory, Leiden University, 2300 RA Leiden, The Netherlands
Instituut-Lorentz for Theoretical Physics, Leiden University, 2333 CA Leiden, The Netherlands
Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Am Mühlenberg 1, 14476 Golm, Germany
Author to whom correspondence should be addressed.
Academic Editor: Jaume Haro
Universe 2017, 3(1), 1;
Received: 9 October 2016 / Revised: 12 December 2016 / Accepted: 13 December 2016 / Published: 23 December 2016
(This article belongs to the Special Issue Loop Quantum Cosmology and Quantum Black Holes)
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. View Full-Text
Keywords: Matter bounce scenario; interacting dark energy; alternatives to inflation Matter bounce scenario; interacting dark energy; alternatives to inflation
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MDPI and ACS Style

Cai, Y.-F.; Marcianò, A.; Wang, D.-G.; Wilson-Ewing, E. Bouncing Cosmologies with Dark Matter and Dark Energy. Universe 2017, 3, 1.

AMA Style

Cai Y-F, Marcianò A, Wang D-G, Wilson-Ewing E. Bouncing Cosmologies with Dark Matter and Dark Energy. Universe. 2017; 3(1):1.

Chicago/Turabian Style

Cai, Yi-Fu, Antonino Marcianò, Dong-Gang Wang, and Edward Wilson-Ewing. 2017. "Bouncing Cosmologies with Dark Matter and Dark Energy" Universe 3, no. 1: 1.

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