Matter bounce scenario in modified f(R,T) gravity

被引:2
|
作者
Sarkar, Payel [1 ]
Das, Prasanta Kumar [1 ]
机构
[1] Birla Inst Technol & Sci Pilani, Dept Phys, KK Birla Goa campus,NH-17B, Zuarinagar 403726, Goa, India
来源
PHYSICS OF THE DARK UNIVERSE | 2023年 / 39卷
关键词
Bouncing universe; Dark matter; Modified gravity;
D O I
10.1016/j.dark.2022.101143
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In the present manuscript we have investigated bouncing universe scenario in case of modified gravity which is f(R,T) = R + 2 lambda T where R is Ricci scalar and T is the trace of energy momentum tensor. In order to show bounce we have considered two different type of the scale factors which are nonzero at t = 0(the point of bounce). The initial non-vanishing value of scale factors can eliminate the singularity problem as well. The behaviour of Hubble parameter H, deceleration parameter q are shown for two different models corresponding to two different scale factors. We also have found the violation of Energy conditions and both the models are highly unstable at the point of bounce but the perturbation decays rapidly away from bounce and becomes stable at late times.(c) 2022 Elsevier B.V. All rights reserved.
引用
收藏
页数:7
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