All Local Gauge Invariants for Perturbations of the Kerr Spacetime.

All Local Gauge Invariants for Perturbations of the Kerr Spacetime.
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克尔时空扰动的所有局域规范不变量。

DOI:
10.1103/physrevlett.121.051104
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发表时间:
2018
影响因子:
8.6
通讯作者:
Thomas Bäckdahl
Thomas Bäckdahl
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Steffen Aksteiner;Thomas Bäckdahl

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我们提出了两个复标量规范不变量,用于根据背景的 Killing 矢量和共形 Killing-Yano 张量以及线性化曲率及其一阶导数协变定义的克尔时空扰动。这些不变量对克尔参数的变化特别敏感。它们与 Teukolsky 标量和线性化 Ricci 张量一起形成一个最小集,可生成所有局部规范不变量。我们还提出了曲率不变量,可以简化为线性化理论中的规范不变量。
We present two complex scalar gauge invariants for perturbations of the Kerr spacetime defined covariantly in terms of the Killing vectors and the conformal Killing-Yano tensor of the background together with the linearized curvature and its first derivatives. These invariants are, in particular, sensitive to variations of the Kerr parameters. Together with the Teukolsky scalars and the linearized Ricci tensor, they form a minimal set that generates all local gauge invariants. We also present curvature invariants that reduce to the gauge invariants in the linearized theory.
克尔时空中线性化引力的新恒等式
DOI: 10.1103/physrevd.99.044043
发表时间: 2019
期刊: Physical Review D
影响因子: 5
作者:
Aksteiner S
通讯作者: Aksteiner S