Journal
NUCLEAR PHYSICS B
Volume 845, Issue 3, Pages 381-392Publisher
ELSEVIER
DOI: 10.1016/j.nuclphysb.2010.12.010
Keywords
Dark energy; Interaction; Dynamical system; Cosmological evolution
Categories
Funding
- NSFC [10905005]
- Beijing Institute of Technology
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In the present work, motivated by the work of Cai and Su [Phys. Rev. D 81 (2010) 103514], we propose a new type of interaction in dark sector, which can change its sign when our universe changes from deceleration to acceleration. We consider the cosmological evolution of quintessence and phantom with this type of interaction, and find that there are some scaling attractors which can help to alleviate the cosmological coincidence problem. Our results also show that this new type of interaction can bring new features to cosmology. (C) 2010 Elsevier B.V. All rights reserved.
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