Quasinormal modes for non-minimally coupled scalar fields in regular black hole spacetimes: Grey-body factors, area spectrum and shadow radius

被引：12

作者：

Yekta, Davood Mahdavian ^{[1
]}

Karimabadi, Majid ^{[1
]}

Alavi, S. A. ^{[1
]}

机构：

[1] Hakim Sabzevari Univ, Dept Phys, POB 397, Sabzevar, Iran

来源：

ANNALS OF PHYSICS | 2021年 / 434卷

关键词：

Regular black holes; Quasinormal modes; WKB method; Grey-body factor; Area quantization; Shadow radius; WKB APPROACH; GRAVITATIONAL PERTURBATION; DARK-MATTER; ABSORPTION; STRINGS; ENERGY; CLOUD;

D O I：

10.1016/j.aop.2021.168603

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Black hole perturbation theory is a useful approach to study interactions between black holes and fundamental fields. A particular class of black hole solutions arising out of modification of Einstein's general theory of relativity are regular black holes (RBHs) which can be constructed using a nonlinear electrodynamic Lagrangian. Because of their importance, we are interested in studying the behavior of three kinds of such RBHs under perturbations generated by an external field. Indeed, we investigate the quasinormal modes (QNMs) of a massive scalar field propagating near the RBHs which is non-minimally coupled to the Ricci scalar-tensor of background geometry. We will attempt to find the low-lying quasinormal frequencies of the perturbations by using WKB approximation. We shall also study the relationship between the QNMs and some characteristic properties of black holes such as grey-body factors, area quantization, and shadow radius. (C) 2021 Elsevier Inc. All rights reserved.

引用

页数：26

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