论文标题
非振荡引力的准模式和为Schwarzschild-de保姆的尾巴讲尾巴黑色孔
Nonoscillatory gravitational quasinormal modes and telling tails for Schwarzschild-de Sitter black holes
论文作者
论文摘要
我们表明，Schwarzschild的重力扰动的准谱 - De Sitter黑洞包含一个纯粹虚构模式的新分支。这些模式在代数上不是特殊的，我们表明它们的总和构成了文献指数渐近尾的众所周知。当事件范围半径与宇宙学范围的比率消失时，这些准标准模式接近空位时空的空模式。因此，频谱由两个分支组成：施瓦茨柴尔德分支因宇宙常数和DE Sitter分支而变形，由黑洞质量变形。尽管De Sitter分支仅包含纯粹的虚构模式，但Schwarzschild分支的振荡模式（具有非零的实际部分）也可以纯粹是虚构的，对于某些宇宙常数的值，它们接近代数特殊模式。
We show that the quasinormal spectrum of gravitational perturbations of Schwarzschild - de Sitter black holes contains a new branch of purely imaginary modes. These modes are not algebraically special and we showed that the sum of them form the well-known in the literature exponential asymptotic tail. When the ratio of the event horizon radius to the cosmological horizon vanishes, these quasinormal modes approach modes of empty de Sitter spacetime. Thus, the spectrum consists of the two branches: Schwarzschild branch deformed by the cosmological constant and de Sitter branch deformed by the black hole mass. While the de Sitter branch contains purely imaginary modes only, the oscillatory modes (with nonzero real part) of the Schwarzschild branch can also become purely imaginary for some values of the cosmological constant, for which they approach the algebraically special mode.
