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Tsallis Holographic Dark Energy with Granda-Oliveros Scale in ()-Dimensional FRW Universe
Advances in Astronomy ( IF 1.6 ) Pub Date : 2019-01-10 , DOI: 10.1155/2019/8138067
Ayman A. Aly 1
Affiliation  

Based on Tsallis holographic dark energy model recently proposed by using the general model of the Tsallis entropy expression, we reconstruct cosmographic parameters, , and we study their evolution in spatially flat ()-dimensional Friedmann-Robertson-Walker universe using Granda-Oliveros scale. Our results show that the universe is in an accelerating expansion mode described by phantom-like behavior. We go further and study the state finder operators and the diagnostic to understand the behavior of our model. The stability of the system is also studied by using the square of speed of sound showing that our model is stable over the low range of red-shift considered. The results indicate that the entropy formalism will play an important role in understanding the dynamics of our universe.

中文翻译:

具有()维FRW宇宙的Granda-Oliveros尺度的Tsallis全息暗能量

基于最近使用Tsallis熵表达的通用模型提出的Tsallis全息暗能量模型,我们重建了宇宙学参数, 我们研究它们在空间平坦()-使用Granda-Oliveros尺度对Friedmann-Robertson-Walker宇宙进行三维计算。我们的结果表明,宇宙处于由幻像行为描述的加速扩展模式。我们将进一步研究状态查找器运算符和诊断程序,以了解我们模型的行为。还通过使用声速的平方来研究系统的稳定性,表明我们的模型在所考虑的低红移范围内是稳定的。结果表明,熵形式论将在理解我们的宇宙动力学方面发挥重要作用。
更新日期:2019-01-10
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