圈量子引力效应准正规光谱的特殊性质,Physical Review D

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圈量子引力效应准正规光谱的特殊性质
Physical Review D ( IF 4.6 ) Pub Date : 2024-01-19 , DOI: 10.1103/physrevd.109.026010
Guoyang Fu _{1,

2,

3} , Dan Zhang ₄ , Peng Liu ₅ , Xiao-Mei Kuang ₂ , Jian-Pin Wu ₂

Affiliation

我们研究了协变环量子引力 (LQG) 黑洞上标量场和电磁场的准正态模式 (QNM) 谱。对于基本模式，LQG 效应减少了标量场中的振荡，但与经典情况相比，它在电磁场中引起更强的振荡。在标量场扰动下，系统具有比电磁场更快的衰减模式和更多的振荡。具有较高泛音的 QNM 光谱中出现了一些奇特的现象。一个显着的特征是在前几个泛音中观察到与史瓦西对应物的显着差异，并且随着泛音数量的增加，这种差异变得更大。更高泛音中的另一个显着现象是标量场的准正常频率

我 = 0

表现出作为量子参数的振荡行为

r_{0}

显着增加。这些振荡随着泛音数的增加而增强。我们假设这种振荡模式可能与极值效应有关。

"点击查看英文标题和摘要"

Peculiar properties in quasinormal spectra from loop quantum gravity effect

We investigate the quasinormal mode (QNM) spectra for scalar and electromagnetic fields over a covariant loop quantum gravity (LQG) black hole. For the fundamental modes, the LQG effect reduces the oscillations in the scalar field, however, it induces stronger oscillations in the electromagnetic field compared to the classical case. Under the scalar field perturbation, the system enjoys faster decaying modes with more oscillations than the electromagnetic field. Some peculiar phenomena emerge in the QNM spectra with higher overtones. A notable feature is the substantial divergence observed in the first several overtones from their Schwarzschild counterparts, with this discrepancy becoming magnified as the overtone number increases. Another remarkable phenomenon in higher overtones is that the quasinormal frequencies of the scalar field with

l = 0

exhibit an oscillatory behavior as the quantum parameter

r_{0}

increases significantly. These oscillations intensify with the rising overtone number. We hypothesize that this oscillatory pattern may be associated with the extremal effect.

更新日期：2024-01-19

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