观测结果是否有利于伽利略而不是精粹？
Do Observations Favour Galileon Over Quintessence?
摘要：
我们研究了Galileon标量场模型作为Dvali-Gababdaze-Porrati（DGP）结构的退耦极限对宇宙后期加速的影响。该模型有一个额外的Galileon校正项，超过标准的动能和势能项的典型的quintessence字段。我们的目的是研究目前的观测数据是否可以区分这个伽利略场和精粹场。我们的研究表明，显着的结果，如线性，平方或指数的潜力，数据更喜欢伽利略模型的精髓领域。它证实了可观测宇宙要求在标准的精粹标量场模型中包含更高阶导数的伽利略修正。
英文摘要：
We study the Galileon scalar field model arising as a decoupling limit of the Dvali-Gababdaze-Porrati (DGP) construction for the late time acceleration of the universe. The model has one extra Galileon correction term over and above the standard kinetic and potential energy terms for a canonical quintessence field. We aim to study whether the current observational data can distinguish between this Galileon field and the quintessence field. Our study shows the remarkable result that for potentials like linear, square or exponential, the data prefers the Galileon model over quintessence field. It confirms that the observable universe demands the inclusion of higher derivative Galileon corrections in the standard quintessence scalar field models.
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