Phase space analysis of Tsallis agegraphic dark energy

2021 ◽  
Vol 53 (7) ◽  
Author(s):  
Hai Huang ◽  
Qihong Huang ◽  
Ruanjing Zhang
Author(s):  
Yi Zhang ◽  
Hui Li ◽  
Yungui Gong ◽  
Zong-Hong Zhu

2012 ◽  
Vol 2012 (07) ◽  
pp. 005-005 ◽  
Author(s):  
Chen Xu ◽  
Emmanuel N Saridakis ◽  
Genly Leon

2015 ◽  
Vol 2015 ◽  
pp. 1-20 ◽  
Author(s):  
Emre Dil ◽  
Erdinç Kolay

We consider a novel dark energy model to investigate whether it will provide an expanding universe phase. Here we propose a mixed dark energy domination which is constituted by tachyon, quintessence, and phantom scalar fields nonminimally coupled to gravity, in the absence of background dark matter and baryonic matter, in the framework of teleparallel gravity. We perform the phase-space analysis of the model by numerical methods and find the late-time accelerated attractor solutions implying the acceleration phase of universe.


2021 ◽  
Vol 36 (31) ◽  
Author(s):  
Koblandy Yerzhanov ◽  
Shynaray Myrzakul ◽  
Duman Kenzhalin ◽  
Martiros Khurshudyan

The phase space analysis has been used to probe the accelerated expansion of the Universe when [Formula: see text] dark energy interacts with cold dark matter. Non-gravitational interactions [Formula: see text] and [Formula: see text] considered in this work are one of the first models of sign changing interactions that appeared in the literature. Specific [Formula: see text] dark energy model with [Formula: see text] has been assumed and all late time scaling attractors have been found. This is a two-parameter model with [Formula: see text] and [Formula: see text] parameters to be determined, while [Formula: see text] is the deceleration parameter. In general the motivation to consider similar fluid models is directly related to the attempts to unify dark energy and dark matter involving the properties of the deceleration parameter. The previous study using similar dark energy model showed that the BOSS result for the expansion rate at [Formula: see text] can be explained without interaction with cold dark matter. In this way, the previous result provides a reasonable basis to organize future studies in this direction. This study is one of the first attempts in this direction. It should be mentioned that the full comparison of the models with observation data and the classification of future singularities have been left as a subject of a forthcoming paper. There are several ways that the model can be extended which also has been left as a subject of a forthcoming paper.


1998 ◽  
Vol 21 (6) ◽  
pp. 463-475 ◽  
Author(s):  
Q. Liu ◽  
S. Islam ◽  
I. Rodriguez-Iturbe ◽  
Y. Le

2004 ◽  
Vol 70 (4) ◽  
Author(s):  
M. K. Olsen ◽  
A. B. Melo ◽  
K. Dechoum ◽  
A. Z. Khoury

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