论文标题
扩展重力理论在物质反弹动力学中的作用
Role of Extended Gravity Theory in Matter Bounce Dynamics
论文作者
论文摘要
在这项工作中，我们研究了$ f（r，t）$重力的框架工作中的一些弹跳宇宙学。弹跳的场景已制定，以避免大爆炸奇异性。研究了物理和几何参数。研究了扩展重力理论对模型动力学参数的影响。发现，$ f（r，t）$重力参数极大地影响了宇宙动力学。我们还通过计算COSMographic系数和$ OM（Z）$参数测试了模型。还进行了弹跳场景的标量场重建。模型的稳定性在线性，均质和各向同性扰动下进行了测试。
In this work, we have studied some bouncing cosmologies in the frame work of $f(R,T)$ gravity. The bouncing scenario has been formulated to avoid the big bang singularity. The physical and geometrical parameters are investigated. The effect of the extended gravity theory on the dynamical parameters of the model is investigated. It is found that, the $f(R,T)$ gravity parameter affects the cosmic dynamics substantially. We have also, tested the model through the calculation of the cosmographic coefficients and the $Om(z)$ parameter. A scalar field reconstruction of the bouncing scenario is also carried out. The stability of the model are tested under linear, homogeneous and isotropic perturbations.
