标题： 宇宙的动力学行为：一种熵力情景 显示英文标题

标题： Dynamical behavior of the Universe: an entropic force scenario

摘要： 熵力源于宇宙存在视界的假设。 这个视界在运动方程中产生了额外的项。 使用动力系统计算，我们的结果表明，在存在暗能量的某些条件下，该理论的最后一个吸引子将是暗能量时期，但在没有暗能量的情况下，熵力能量部分将在晚期宇宙中起主导作用，并负责该时期的加速膨胀。 有趣的是，假设熵力项和暗能量各自占据宇宙的能量密度，在某些条件下，熵力主导时期是一个稳定的固定点，而暗能量时期则是一个鞍点。 显示英文摘要

摘要： Entropic force originates in the assumption that there is a horizon for the universe. This horizon gives rise to additional terms in the equations of motion. Using dynamical system calculations, our results show that in the presence of dark energy for certain conditions, the last attractor of this theory will be dark energy epoch, but in the absence of dark energy, entropic force energy portion will have the lead role in the late time universe and is responsible for accelerated expansion of that. Interestingly, assuming both entropic force terms and dark energy to have their share of energy density of the universe, we have found that, in certain conditions entropic force dominated epoch is a stable fixed point while the dark energy epoch is a saddle point.