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A Quintom scenario with mixed kinetic terms

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 نشر من قبل Joel Weller
 تاريخ النشر 2009
  مجال البحث فيزياء
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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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