A Quintom scenario with mixed kinetic terms

Details A Quintom scenario with mixed kinetic terms A Quintom scenario with mixed kinetic terms

2009-12-29

arxiv.org/abs/0912.5304v2

Phys. Rev. D 81, 123523 (2010)

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, 4 figures, version published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.81.123523

We examine an extension of the quintom scenario of dark energy, in which a canonical scalar field and a phantom field are coupled through a kinetic interaction. We perform a phase space analysis and show that the kinetic coupling gives rise to novel cosmological behaviour. In particular, we obtain both quintessence-like and phantom-like late-time solutions, as well as solutions that cross the phantom divide during the evolution of the universe.

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