Big Rip in Swiss-cheese brane-worlds with cosmic transit

被引:2
作者
Ahmed, Nasr [1 ,2 ]
Fekry, M. [3 ]
Kamel, Tarek M. [2 ]
机构
[1] Taibah Univ, Fac Sci, Math & Stat Dept, Medina, Saudi Arabia
[2] Natl Res Inst Astron & Geophys, Astron Dept, Helwan, Cairo, Egypt
[3] King Saud Univ, Dept Basic Sci, Common Year 1, Riyadh, Saudi Arabia
关键词
modified gravity; cosmology; dark energy; PROBE WMAP OBSERVATIONS; 4D GRAVITY; COSMOGRAPHY; COSMOLOGY;
D O I
10.1139/cjp-2022-0338
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We study the Big Rip scenario in Swiss-cheese brane-worlds. The results obtained have been found to be independent of the value of the cosmological constant Lambda whether it is 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 equation of state parameter shows the presence of three phases: the matterdominant 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.
引用
收藏
页码:712 / 719
页数:8
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