Bouncing solutions in gravity
arXiv:2009.11410 · doi:10.1140/epjc/s10052-020-08638-9
Abstract
We consider certain aspects of cosmological dynamics of a spatially curved Universe in gravity. Local analysis allows us to find conditions for bounces and for static solutions; these conditions appear to be in general less restrictive than in general relativity. We also provide a global analysis of the corresponding cosmological dynamics in the cases when bounces and static configurations exist, by constructing phase diagrams. These diagrams indicate that the fate of a big contracting Universe is not altered significantly when bounces become possible, since they appear to be inaccessible by a sufficiently big Universe.
11 pages, 5 figures, v3: some corrections, published version
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- Cosmic dynamics and qualitative study of Rastall model with spatial curvature
- Qualitative study of anisotropic Rastall cosmologies
- The dynamics of matter bounce cosmology in Weyl-type gravity
- Bounce Models within Teleparallel modified gravity
- Cosmology with Nonzero Curvature
- gravity in a Friedmann-Lema\^ıtre-Robertson-Walker universe with nonzero spatial curvature
- Bianchi I cosmological solutions in teleparallel gravity
- Reconstruction of the singularity-free gravity via Raychaudhuri equations
- Non-singular bouncing cosmology in gravity with energy condition violations
- Static cosmological solutions in quadratic gravity