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Smooth double crossing of the phantom divide line $w_{\Lambda}=-1$ has beenfound possible with a single minimally coupled scalar field for the most simpleform of generalized k-essence cosmological model, in the presence of backgroundcold dark matter. Such crossing is a sufficiently late time transient phenomenaand does not have any pathological behaviour.

Smooth crossing of $w_{\Lambda} = -1$ line in a single scalar field model