International Journal of Geometric Methods in Modern Physics ( IF 1.8 ) Pub Date : 2022-08-19 , DOI: 10.1142/s0219887822502061 Z. Yousaf 1 , M. Z. Bhatti 1 , H. Aman 1
This work aims to study the bouncing universe under f(G, T) theory of gravity (where G and T are the Gauss–Bonnet invariance and trace of energy–momentum tensor, respectively). We construct modified field equations (MFEs) to analyze the behavior of Hubble parameter (HP) for with , and are constant terms. Different constraints are applied, engaging HP to examine the accelerating universe and to test initial singularity. The graphical analysis is made for different values of n to explain bouncing process more precisely with respect to cosmic time that also provides an indication of null energy condition (NEC) violation. Resultantly, all mandatory conditions are fulfilled indicating that our proposed model provides good bouncing solutions.
中文翻译:
具有幂律 f(G, T) 模型的宇宙反弹
这项工作旨在研究f ( G, T ) 引力理论下的弹跳宇宙(其中G和T分别是 Gauss-Bonnet 不变性和能量动量张量的迹)。我们构建修正场方程 (MFE) 来分析哈勃参数 (HP) 的行为和,和是常数项。应用不同的约束条件,让惠普检查加速的宇宙并测试初始奇点。对不同的n值进行图形分析,以更准确地解释相对于宇宙时间的弹跳过程,这也提供了零能量条件 (NEC) 违规的指示。结果,满足了所有强制性条件,表明我们提出的模型提供了良好的弹跳解决方案。