Quintessence and phantom cosmology with non-minimal derivative coupling

Details Quintessence and phantom cosmology with non-minimal derivative coupling Quintessence and phantom cosmology with non-minimal derivative coupling

2010-02-18

arxiv.org/abs/1002.3478v2

Phys.Rev.D81:083510,2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, 8 figures

Scientific paper

10.1103/PhysRevD.81.083510

We investigate cosmological scenarios with a non-minimal derivative coupling between the scalar field and the curvature, examining both the quintessence and the phantom cases in zero and constant potentials. In general, we find that the universe transits from one de Sitter solution to another, determined by the coupling parameter. Furthermore, according to the parameter choices and without the need for matter, we can obtain a Big Bang, an expanding universe with no beginning, a cosmological turnaround, an eternally contracting universe, a Big Crunch, a Big Rip avoidance and a cosmological bounce. This variety of behaviors reveals the capabilities of the present scenario.

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