瑞士奶酪膜世界的大裂口和宇宙凌日

IF 1.1 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY Canadian Journal of Physics Pub Date : 2022-11-30 DOI:10.1139/cjp-2022-0338
N. Ahmed, M. Fekry, T. M. Kamel
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引用次数: 2

摘要

我们研究了瑞士奶酪膜世界中的大撕裂情景。所得到的结果与宇宙常数Λ的值无关,无论它是正的、负的还是零。在当前模型中不允许使用负张力膜。在宇宙压力中有一个符号翻转对应于减速参数从正到负的符号翻转。EOS参数的演化表现为三个阶段:物质主导的减速时代、加速-实质阶段和幻相阶段。势项和动力项的演化也表现出符号的变化。对能量条件和宇宙学参数也进行了研究。
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Big rip in Swiss-cheese Brane-worlds with cosmic transit
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.
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来源期刊
Canadian Journal of Physics
Canadian Journal of Physics 物理-物理:综合
CiteScore
2.30
自引率
8.30%
发文量
65
审稿时长
1.7 months
期刊介绍: The Canadian Journal of Physics publishes research articles, rapid communications, and review articles that report significant advances in research in physics, including atomic and molecular physics; condensed matter; elementary particles and fields; nuclear physics; gases, fluid dynamics, and plasmas; electromagnetism and optics; mathematical physics; interdisciplinary, classical, and applied physics; relativity and cosmology; physics education research; statistical mechanics and thermodynamics; quantum physics and quantum computing; gravitation and string theory; biophysics; aeronomy and space physics; and astrophysics.
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