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Bouncing solutions in f(T) gravity

Maria A. SkugorevaKazan Federal University, Kremlevskaya 18, Kazan, 420008, RussiaAlexey V. ToporenskyKazan Federal University, Kremlevskaya 18, Kazan, 420008, Russia
2020en
ABI

Аннотация

Abstract We consider certain aspects of cosmological dynamics of a spatially curved Universe in f ( T ) 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.

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