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arXiv · 1005.2716

General Non-minimal Kinetic coupling to gravity

L. N. Granda·W. Cardona
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Abstract

We study a new model of scalar field with a general non-minimal kinetic coupling to itself and to the curvature, as a source of dark energy, and analyze the cosmological dynamics of this model and the issue of accelerated expansion. A wide variety of scalar fields and potentials giving rise to power-law expansion have been found. The dynamical equation of state is studied for the two cases, without and with free kinetic term . In the first case, a behavior very close to that of the cosmological constant was found. In the second case, a solution was found, which match the current phenomenology of the dark energy. The model shows a rich variety of dynamical scenarios.

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L. N. Granda, W. Cardona. 2010-05-16. General Non-minimal Kinetic coupling to gravity. https://doi.org/10.1088/1475-7516/2010/07/021

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