A model for a non-minimally coupled scalar field interacting with dark matter

Details A model for a non-minimally coupled scalar field interacting with dark matter A model for a non-minimally coupled scalar field interacting with dark matter

2006-01-25

arxiv.org/abs/gr-qc/0601106v1

Braz.J.Phys. 35 (2005) 1038-1040

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

3 pages, 4 figures. To appear in Brazilian Journal of Physics

Scientific paper

In this work we investigate the evolution of a Universe consisted of a scalar field, a dark matter field and non-interacting baryonic matter and radiation. The scalar field, which plays the role of dark energy, is non-minimally coupled to space-time curvature, and drives the Universe to a present accelerated expansion. The non-relativistic dark matter field interacts directly with the dark energy and has a pressure which follows from a thermodynamic theory. We show that this model can reproduce the expected behavior of the density parameters, deceleration parameter and luminosity distance.

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