标题： 宇宙的加速膨胀及其背后的物理定律 显示英文标题

标题： The acceleration of the universe and the physics behind it

摘要： 使用暗能量模型的四类一般分类，我们讨论宇宙学观测的互补性以解决我们宇宙加速之外的物理问题。 我们讨论区分四类的测试，然后专注于牛顿区域内扰动的动力学。 我们还明确展示了在一组观测中具有相同预测的模型。 显示英文摘要

摘要： Using a general classification of dark enegy models in four classes, we discuss the complementarity of cosmological observations to tackle down the physics beyond the acceleration of our universe. We discuss the tests distinguishing the four classes and then focus on the dynamics of the perturbations in the Newtonian regime. We also exhibit explicitely models that have identical predictions for a subset of observations.