论文标题
两个DGP麸皮的宇宙学限制，额外的额外尺寸
Cosmological restrictions for two DGP branes in a bulk with compactified extra dimension
论文作者
论文摘要
我们研究了一个嵌入在较高维度背景时空中的两个Brane系统的宇宙学后果，其作用包括每个Brane的固有曲率。我们发现，每个棕褐色的动力学通过涉及量表因子，状态参数的方程和两个麸皮参数的宇宙学限制与另一方的动力学相关。我们分析当存在的brane中存在宇宙常数，辐射或非权威性问题时，分析了尺度因子的演变和隐藏brane的状态参数方程。拓扑限制会导致宇宙学场景，而没有初始的奇异性，回忆和振荡的宇宙。
We investigate the cosmological consequences of a two brane system embedded in a higher dimensional background spacetime with a compactified extra dimension described with an action that include the intrinsic curvature for each brane. We find that the dynamics of each brane is related to the other by means of cosmological restrictions that involve the scale factors, the equation of state parameters and the Hubble parameters of the two branes. We analyze the evolution of the scale factor and the equation of state parameter for the hidden brane when in the visible brane is present a cosmological constant, radiation or non-relativistic matter. The topological restrictions give rise to the cosmological scenarios without initial singularity, recollapsing and oscillating universes.
