Cosmological evolution of quintessence and phantom with a new type of interaction in dark sector |
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Authors: | Hao Wei |
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Affiliation: | Department of Physics, Beijing Institute of Technology, Beijing 100081, China |
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Abstract: | 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. |
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Keywords: | Dark energy Interaction Dynamical system Cosmological evolution |
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