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Higher-order coupled quintessence

par Lopez Honorez, Laura ;Mena, Olga;Panotopoulos, Grigoris
Référence Physical review. D, Particles, fields, gravitation, and cosmology, 82, 12, 123525
Publication Publié, 2010-12

Article révisé par les pairs

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Résumé :

We study a coupled quintessence model in which the interaction with the dark-matter sector is a function of the quintessence potential. Such a coupling can arise from a field dependent mass term for the dark-matter field. The dynamical analysis of a standard quintessence potential coupled with the interaction explored here shows that the system possesses a late-time accelerated attractor. In light of these results, we perform a fit to the most recent Supernovae Ia, Cosmic Microwave Background, and Baryon Acoustic Oscillation data sets. Constraints arising from weak equivalence principle violation arguments are also discussed. © 2010 The American Physical Society.