Cosmic evolution of ghost dark energy models in f(G,T) gravity

被引:2
作者
Sharif, M. [1 ]
Saba, S. [1 ]
机构
[1] Univ Punjab, Dept Math, Quaid E Azam Campus, Lahore 54590, Pakistan
关键词
Dark energy; cosmological evolution; f(G; T); gravity; CURRENT-ALGEBRA; F G; U(1); STABILITY;
D O I
10.1142/S0217732320500637
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The aim of this paper is to study the reconstruction paradigm for both ghost as well as generalized ghost dark energy models in the context of f(G, T) gravity. To accomplish this, we use correspondence scenario for pressureless flat FRW universe with power-law scale factor. The cosmological behavior of reconstructed models is analyzed through graphical analysis of deceleration, equation of state, squared speed of sound parameters and phase planes. It is found that the deceleration parameter represents accelerated epoch for both models whereas equation of state parameter indicates phantom era of the universe for ghost dark energy model and quintessence for its generalized version. The phase planes (omega(eff) - omega(eff)'( )and r - s) indicate the freezing region with phantom phase for both reconstructed dark energy models. We conclude that the squared speed of sound parameter leads to the stability of generalized ghost dark energy model only.
引用
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页数:18
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