论文标题
带有高阶高斯曲率曲率的修饰重力中弹跳宇宙学
Bouncing cosmology in modified gravity with higher-order Gauss-Bonnet curvature term
论文作者
论文摘要
在本文中，我们研究了在f（r，g）重力理论中在哈勃函数的背景下制定的宇宙学模型的弹跳行为，其中r和g表示ricci stalar量和高斯 - 骨网不变。考虑到不同的可行模型，研究了弹跳宇宙学的动作，并可以解决标准大爆炸宇宙学的奇异性困难。两种模型都显示出弹跳的行为并满足弹跳的宇宙学特性。基于动力学，减速和能量条件的模型表明进化晚期的加速行为。弹跳时期的幻影类似于典型行为。最后，我们制定了扰动的进化方程，并研究了两个弹跳溶液的稳定性。
In this paper, we have studied the bouncing behavior of the cosmological models formulated at the background of the Hubble function in the F(R, G) theory of gravity, where R and G denote the Ricci scalar and Gauss-Bonnet invariant. The actions of bouncing cosmology are studied under consideration of different viable models and can resolve the difficulty of singularity in standard Big-Bang cosmology. Both models show bouncing behavior and satisfy the bouncing cosmological properties. Models based on dynamical, deceleration, and energy conditions indicate the accelerating behavior at the late evolution time. Phantom at the bounce epoch is analogous to a quintessence behavior. Finally, we formulate the perturbed evolution equations and investigate the stability of two bouncing solutions.
