Cosmological Implications of the Generalized Entropy Based Holographic Dark Energy Models in Dynamical Chern-Simons Modified Gravity

被引:49
|
作者
Younas, M. [1 ]
Jawad, Abdul [1 ]
Qummer, Saba [1 ]
Moradpour, H. [2 ]
Rani, Shamaila [1 ]
机构
[1] COMSATS Univ Islamabad, Dept Math, Lahore Campus, Lahore 54000, Pakistan
[2] RIAAM, POB 55134-441, Maragha, Iran
关键词
D O I
10.1155/2019/1287932
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
Recently, Tsallis, R ' enyi, and Sharma-Mittal entropies have widely been used to study the gravitational and cosmological setups. We consider a flat FRWuniversewith linear interactionbetween dark energy and darkmatter. We discuss the dark energymodels using Tsallis, R ' enyi, and Sharma-Mittal entropies in the framework of Chern-Simons modified gravity. We explore various cosmological parameters (equation of state parameter, squared sound of speed) and cosmological plane (.... -......, where...... is the evolutionary equation of state parameter). It is observed that the equation of state parameter gives quintessence-like nature of the universe in most of the cases. Also, the squared speed of sound shows stability of Tsallis and R ' enyi dark energy model but unstable behavior for Sharma-Mittal dark energy model. The.... -...... plane represents the thawing region for all dark energy models.
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页数:9
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