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arxiv: 1509.00590 · v2 · pith:CMKETC26new · submitted 2015-09-02 · 🌀 gr-qc · astro-ph.CO· hep-th

Interdependence between integrable cosmological models with minimal and non-minimal coupling

classification 🌀 gr-qc astro-ph.COhep-th
keywords modelsclasscosmologicalcouplingdynamicsframeintegrablenon-minimal
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We consider the relation between exact solutions of cosmological models having minimally and non-minimally coupled scalar fields. This is done for a particular class of solvable models which, in the Einstein frame, have potentials depending on hyperbolic functions and in the Jordan frame, where the non-minimal coupling is conformal, possess a relatively simple dynamics. We show that a particular model in this class can be generalized to the cases of closed and open Friedmann universes and still exhibits a simple dynamics. Further we illustrate the conditions for the existences of bounces in some sub-classes of the set of integrable models we have considered.

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