论文标题
普遍的不确定性原理中的精髓动力
Dynamics of Quintessence in Generalized Uncertainty Principle
论文作者
论文摘要
我们研究了在空间平坦的均匀和各向同性宇宙背景下通过广义不确定性原理修改的典型标量场模型。通过执行动力学系统分析，我们检查了关键点的性质及其在两个电势方面的稳定性，一个是指数势，另一个是一般潜力。在指数的潜力的情况下，我们发现了描述Sitter Universe的这种修改的典型场景的一些新关键点，并且这些关键点并未出现在具有指数潜力的标准典型模型中。这是这项工作的主要结果之一。现在，对于一般的潜力，我们的分析表明，关键点的物理特性与指数势的完全相同，这意味着在此修改后的典型场景中，各种电位都具有相同的行为。这种结果在宇宙学上是全新的，因为随着潜力的变化，通常在所有方面都可以预期差异。
We investigate the quintessence scalar field model modified by the Generalized Uncertainty Principle in the background of a spatially flat homogeneous and isotropic universe. By performing a dynamical system analysis we examine the nature of the critical points and their stability for two potentials, one is the exponential potential and the other is a general potential. In the case of an exponential potential, we find some new critical points for this modified quintessence scenario that describe the de Sitter universe, and these critical points do not appear in the standard quintessence model with an exponential potential. This is one of the main results of this work. Now for the general potential our analysis shows that the physical properties of the critical points remain exactly the same as for the exponential potential which means that within this modified quintessence scenario all kind of potentials have same behaviour. This kind of result is completely new in cosmology because with the change of the potential, differences are usually expected in all respect.
