Attractor Universe in the Scalar-Tensor Theory of Gravitation

Details Attractor Universe in the Scalar-Tensor Theory of Gravitation Attractor Universe in the Scalar-Tensor Theory of Gravitation

2009-02-07

arxiv.org/abs/0902.1221v2

Phys.Rev.D79:084026,2009

Physics

High Energy Physics

High Energy Physics - Theory

Scientific paper

10.1103/PhysRevD.79.084026

In the scalar-tensor theory of gravitation it seems nontrivial to establish if solutions of the cosmological equations in the presence of a cosmological constant behave as attractors independently of the initial values. We develop a general formulation in terms of two-dimensional phase space. We show that there are two kinds of fixed points, one of which is an attractor depending on the coupling constant and equation of state. In the case with a power-law potential in the Jordan frame, we also find new type of inflation caused by the coupling to the matter fluid.

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