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 2409.04517gr-qcastro-ph.HEhep-th
收藏

克尔黑洞拟正则模谱的高阶导数修正

Higher-derivative corrections to the Kerr quasinormal mode spectrum

Pablo A. Cano, Lodovico Capuano, Nicola Franchini, Simon Maenaut, Sebastian H. Völkel

AI总结:

本研究针对爱因斯坦引力的高阶导数拓展理论,通过广义连分数法求解旋转黑洞拟正则模频率的领头阶修正,给出不同模式下的自旋依赖关系与适用范围,验证了泛音对修正的高敏感性,结果已公开。

摘要:

我们针对爱因斯坦引力理论的一般高阶导数拓展形式,开展了迄今最完备的旋转黑洞拟正则模分析。通过推导Teukolsky方程的修正项并将其表述为简洁形式,我们得以应用一种广义连分数方法,求解包含泛音在内的拟正则模频率。我们得到了所有(l,m,n)模式下克尔拟正则模频率的领头阶修正,其中l=2、3、4,-l≤m≤l,n=0、1、2,并通过多项式拟合将其表示为黑洞自旋χ的函数。我们估计,根据模式的不同,我们的结果在自旋约为χ~0.7到χ~0.95的范围内均保持准确。我们发现泛音整体上对修正更为敏感,这与该主题近期文献的预期相符。我们还通过估计高阶导数耦合中的非线性效应大小,讨论了拟正则模频率线性修正的适用极限。所有结果均已在在线代码库中公开发布。

英文摘要:

We provide the most complete analysis so far of quasinormal modes of rotating black holes in a general higher-derivative extension of Einstein's theory. By finding the corrections to the Teukolsky equation and expressing them in a simple form, we are able to apply a generalized continued fraction method that allows us to find the quasinormal mode frequencies including overtones. We obtain the leading-order corrections to the Kerr quasinormal mode frequencies of all the $(l,m,n)$ modes with $l=2,3,4$, $-l\le m\le l$ and $n=0,1,2$, and express them as a function of the black hole spin $χ$ using polynomial fits. We estimate that our results remain accurate up to spins between $χ\sim 0.7$ and $χ\sim 0.95$, depending on the mode. We report that overtones are overall more sensitive to corrections, which is expected from recent literature on this topic. We also discuss the limit of validity of the linear corrections to the quasinormal mode frequencies by estimating the size of nonlinear effects in the higher-derivative couplings. All our results are publicly available in an online repository.

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。

↑