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Cosmological Constraints on the Sign-Changeable Interactions
Cosmological Constraints the Sign-Changeable Interactions
2011/1/13
Recently, Cai and Su [Phys.\ Rev.\ D {\bf 81}, 103514 (2010)] argued that the sign of interaction $Q$ in the dark sector changed in the approximate redshift range of $0.45\,\lsim\, z\,\lsim\, 0.9$, by...