Quasinormal modes and greybody factor of a Lorentz-violating black hole

被引：0

作者：

Guo, Wen-Di ^{[1
,2
,3
]}

Tan, Qin ^{[4
]}

Liu, Yu-Xiao ^{[1
,2
,3
]}

机构：

[1] Lanzhou Univ, Lanzhou Ctr Theoret Phys, Sch Phys Sci & Technol, Key Lab Theoret Phys Gansu Prov, Tianshui Rd 222, Lanzhou 730000, Peoples R China

[2] Lanzhou Univ, Inst Theoret Phys, Tianshui Rd 222, Lanzhou 730000, Peoples R China

[3] Lanzhou Univ, Res Ctr Gravitat, Tianshui Rd 222, Lanzhou 730000, Peoples R China

[4] Hunan Normal Univ, Synerget Innovat Ctr Quantum Effects & Applicat, Key Lab Low Dimens Quantum Struct & Quantum Contro, Minist Educ,Dept Phys, Lushan Rd 36, Changsha 410081, Hunan, Peoples R China

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2024年 / 07期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

black holes; modified gravity; gravitational waves / theory; TESTS;

D O I：

10.1088/1475-7516/2024/07/008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recently, a static spherically symmetric black hole solution was found in gravity nonminimally coupled a background Kalb-Ramond field. The Lorentz symmetry is spontaneously broken when the Kalb-Ramond field has a nonvanishing vacuum expectation value. In this work, we focus on the quasinormal modes and greybody factor of this black hole. The master equations for the perturbed scalar field, electromagnetic field, and gravitational field can be written into a Schr & ouml;dinger equation. We use three methods to solve the quasinormal frequencies in the frequency domain. The results agree well with each other. The time evolution of a Gaussian wave packet is studied. The quasinormal frequencies fitted from the time evolution data agree well with that of frequency domain. The greybody factor is calculated by Wentzel-Kramers-Brillouin (WKB) method. The effect of the Lorentz -violating parameter on the quasinormal modes and greybody factor are also studied.

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页数：18

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