Spin-charge induced spontaneous scalarization of Kerr-Newman black holes

被引：9

作者：

Lai, Meng-Yun ^{[1
]}

Myung, Yun Soo ^{[2
,3
]}

Yue, Rui-Hong ^{[4
,5
]}

Zou, De-Cheng ^{[4
,5
]}

机构：

[1] Jiangxi Normal Univ, Coll Phys & Commun Elect, Nanchang 330022, Peoples R China

[2] Inje Univ, Inst Basic Sci, Gimhae 50834, South Korea

[3] Inje Univ, Dept Comp Simulat, Gimhae 50834, South Korea

[4] Yangzhou Univ, Ctr Gravitat & Cosmol, Yangzhou 225009, Peoples R China

[5] Yangzhou Univ, Coll Phys Sci & Technol, Yangzhou 225009, Peoples R China

来源：

PHYSICAL REVIEW D | 2022年 / 106卷 / 08期

基金：

国家重点研发计划;

关键词：

D O I：

10.1103/PhysRevD.106.084043

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the tachyonic instability of Kerr-Newman (KN) black holes in the Einstein-Maxwell -scalar (EMS) theory with a positive coupling parameter alpha. This corresponds to exploring the onset of spontaneous scalarization for KN black holes. For this purpose, we use the hyperboloidal foliation method to solve the linearized scalar equation numerically. We obtain a 3D graph [log10 alpha(a; Q)] which indicates the onset surface for spontaneous scalarization of KN black holes in the EMS theory. We find that there is no lower bound on the rotational parameter a, but its upper bound is given by M2 - Q2 >= a2. Also, we confirm that the high rotation enhances spontaneous scalarization of KN black holes in the EMS theory.

引用

页数：9

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