论文标题
与宇宙过境
Big rip in Swiss-cheese Brane-worlds with cosmic transit
论文作者
论文摘要
我们研究瑞士奶酪brane世界中的大裂纹。已发现获得的结果与宇宙常数$λ$的值无关，无论其正，负还是零。在当前模型中不允许负张力。在宇宙压力中有一个符号翻转，该标志对应于从正变为负到负面的减速参数中的符号翻转。 EOS参数的演变显示了三个阶段的存在：物质主要减速时代，加速质量阶段和幻影阶段。潜在和动力学术语的演变也显示出符号的变化。还已经研究了能量条件和cosmographic参数。
We study the big rip scienario in Swiss-cheese Brane-worlds. The results obtained have been found to be independent of the value of the cosmological constant $Λ$ whether its positive, negative or zero. Negative tension branes are not allowed in the current model. There is a sign flipping in cosmic pressure corresponding to the sign flipping in the deceleration parameter from positive to negative. The evolution of the EOS parameter shows the presence of three phases: the matter dominant decelerating era,The accelerated-Quitessence phase, and the phantom phase. The evolution of the potential and Kinetic term also shows a change of sign. The energy conditions and cosmographic parameters have also been investigated.
