论文标题

$ f(q)$ - 重力的本地旋转对称bianchi-i宇宙的各向同性化

Isotropization of locally rotationally symmetric Bianchi-I universe in $f(Q)$-gravity

论文作者

De, Avik, Mandal, Sanjay, Beh, J. T., Loo, Tee-How, Sahoo, P. K.

论文摘要

尽管对加速宇宙学的描述有所成功,但宇宙的早期演变总是挑战人类。我们有前途的方法在于一类新的对称的对称触觉重力理论,名为$ f(q)$,其中非金属标量$ q $造成了重力互动,这可能解决了一些问题。为了研究宇宙的早期演变,我们假定各向异性局部旋转对称(LRS)Bianchi-i时空并得出运动方程。我们讨论了能量密度,状态和偏度参数方程的特征,并观察到,我们的模型在宇宙的早期阶段存档各向异性空间几何形状,可能存在各向异性流体,并且随着时间的流动,即使时间继续进行,即使在各向异性流体的情况下,宇宙也可能导致流动性和流动性的流动性。

Despite having the somewhat successful description of accelerated cosmology, the early evolution of the universe always challenges mankind. Our promising approach lies in a new class of symmetric teleparallel theory of gravity named $f(Q)$, where the non-metricity scalar $Q$ is responsible for the gravitational interaction, which may resolve some of the issues. To study the early evolution of the universe, we presume an anisotropic locally rotationally symmetric (LRS) Bianchi-I spacetime and derive the motion equations. We discuss the profiles of energy density, equation of state and skewness parameter and observe that our models archive anisotropic spatial geometry in the early phase of the universe with a possible presence of anisotropic fluid and as time goes on, even in the presence of an anisotropic fluid, the universe could approach isotropy due to inflation and the anisotropy of the fluid fades away at the same time.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源