arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2303.07424gr-qc
收藏

$f(Q)$ 引力中黑洞的拟正规模式

Quasinormal Modes of Black holes in $f(Q)$ gravity

Dhruba Jyoti Gogoi, Ali Övgün, M. Koussour

AI总结:

本文利用 Bernstein 谱方法研究了 $f(Q)$ 引力中黑洞的拟正规模式,并通过 WKB 方法验证,发现标量扰动的频率高于电磁扰动,而电磁扰动的阻尼率更高。

摘要:

在这项工作中,我们通过使用一种最近引入的称为 Bernstein 谱方法的方法,研究了 $f(Q)$ 引力中 $f(Q)=\underset{n}{\sum}a_{n}\left(Q-Q_{0}\right)^{n}$ 类型模型下黑洞的拟正规模式,并借助众所周知的 Padé 平均高阶 WKB 近似方法证实了该方法的有效性。这里我们考虑了黑洞时空中的标量扰动和电磁扰动,并获得了相应的拟正规模式。我们看到,对于非零的非度规标量 $Q_0$,标量扰动中的拟正规频率大于电磁扰动情形下的频率。另一方面,电磁扰动的引力波阻尼率更高。为了确认拟正规模式的行为,我们还研究了两种类型扰动的时间域剖面。

英文摘要:

In this work, we have studied the quasinormal modes of a black hole in a model of the type $f(Q)=\underset{n}{\sum}a_{n}\left(Q-Q_{0}\right)^{n} $ in $f(Q)$ gravity by using a recently introduced method known as Bernstein spectral method and confirmed the validity of the method with the help of well known Padé averaged higher order WKB approximation method. Here we have considered scalar perturbation and electromagnetic perturbation in the black hole spacetime and obtained the corresponding quasinormal modes. We see that for a non-vanishing nonmetricity scalar $Q_0$, quasinormal frequencies in scalar perturbation are greater than those in electromagnetic perturbation scenarios. On the other hand, the damping rate of gravitational waves is higher for electromagnetic perturbation. To confirm the quasinormal mode behaviour, we have also investigated the time domain profiles for both types of perturbations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑