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In the present work, motivated by the work of Cai and Su [Phys. Rev. D {\bf81}, 103514 (2010)], we propose a new type of interaction in dark sector, whichcan change its sign when our universe changes from deceleration toacceleration. We consider the cosmological evolution of quintessence andphantom with this type of interaction, and find that there are some scalingattractors which can help to alleviate the cosmological coincidence problem.Our results also show that this new type of interaction can bring new featuresto cosmology.

Cosmological Evolution of Quintessence and Phantom with a New Type of Interaction in Dark Sector