Remarks on some vacuum solutions of scalar-tensor cosmological models

Details Remarks on some vacuum solutions of scalar-tensor cosmological models Remarks on some vacuum solutions of scalar-tensor cosmological models

2003-12-11

arxiv.org/abs/hep-th/0312124v1

Braz.J.Phys. 34 (2004) 526-530

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, 4 figures. To be published in the Brazilian Journal of Physics

Scientific paper

We present a class of exact vacuum solutions corresponding to de Sitter and
warm inflation models in the framework of scalar-tensor cosmologies. We show
that in both cases the field equations reduce to planar dynamical systems with
constraints. Then, we carry out a qualitative analysis of the models by
examining the phase diagrams of the solutions near the equilibrium points.

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