Bouncing Cosmologies

By M. Novello, S. Bergliaffa. 2008

728 citations recorded by the source corpus.

We review the general features of nonsingular universes (i.e. those that go from an era of accelerated collapse to an expanding era without displaying a singularity) as well as cyclic universes. We discuss the mechanisms behind the bounce, and analyze examples of solutions that implement these mechanisms. Observational consequences of such regular cosmologies are also considered, with emphasis in the behavior of the perturbations.

Subfields: Astronomy and Astrophysics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/906fab949c981c08d2e9b049ac86b115f59cd95e

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In Astronomy and Astrophysics

In Statistical and Nonlinear Physics

Citations in the corpus

The Matter Bounce Alternative to Inflationary Cosmology (2012, background): “In Section 3 of this review I will describe some concrete and recent models which yield a bouncing cosmology (the reader is referred to [1] for an overview of early work on obtaining bouncing universes).”
Exploring bouncing cosmologies with cosmological surveys (2014, background): “We refer to [75, 76] for recent reviews of various bouncing cosmologies.”
Horndeski theory and beyond: a review (2019, neutral): “, [92, 93, 94, 95, 96] for a review).”
Introductory Notes on Non‐linear Electrodynamics and its Applications (2021, background): “[101,102] and [130] for a review), non-linear electrodynamics may remove these singularities and give rise to regular cosmological solutions.”
f(R) Theories Of Gravity (2008, background): “Moreover, the violation of the energy conditions makes it possible to have Ḣ > 0 and bouncing universes (Carloni et al., 2006; Novello and Bergliaffa, 2008).”
Loop quantum cosmology: a status report (2011, background): “[17] for a review), most notably by the pre-big-bang scenario in string theory [18], ekpyrotic and cyclic models [19, 20] inspired by the brane world ideas and in theories with high order curvature terms in the action (see eg.”
Bouncing Cosmologies: Progress and Problems (2016, background): “We are not giving a complete list of alternatives to inflation, nor are we discussing all bouncing scenarios (for a more complete survey or older models see [26], and [27] for a more recent review).”