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[en] 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 behavior. In particular, we obtain both quintessence-like and phantomlike late-time solutions, as well as solutions that cross the phantom divide during the evolution of the Universe.
Journal
Physical Review. D, Particles Fields; ISSN 0556-2821; 
; CODEN PRVDAQ; v. 81(12); p. 123523-123523.11
; CODEN PRVDAQ; v. 81(12); p. 123523-123523.11