标题：Smooth Crossing of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>w</mml:mi><mml:mi>Λ</mml:mi></mml:msub><mml:mo>=</mml:mo><mml:mo>−</mml:mo><mml:mn>1</mml:mn></mml:math> Line in a Single Scalar Field Model
摘要：Smooth double crossing of the phantom divide line wΛ=−1 has been found possible with a single minimally
coupled scalar field for the most simple form of generalized k-essence cosmological model, in the presence of
background cold dark matter. Such crossing is a sufficiently late time transient phenomenon and does not have
any pathological behaviour.
