Spin-Induced Black Hole Spontaneous Scalarization

被引：156

作者：

Dima, Alexandru ^{[1
,2
,3
]}

Barausse, Enrico ^{[1
,2
,3
,4
,5
]}

Franchini, Nicola ^{[1
,2
,3
]}

Sotiriou, Thomas P. ^{[6
,7
]}

机构：

[1] SISSA, Via Bonomea 265, I-34136 Trieste, Italy

[2] Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy

[3] IFPU Inst Fundamental Phys Universe, Via Beirut 2, I-34014 Trieste, Italy

[4] CNRS, Inst Astrophys Paris, 98 Bis Blvd Arago, F-75014 Paris, France

[5] Sorbonne Univ, UMR 7095, 98 Bis Blvd Arago, F-75014 Paris, France

[6] Univ Nottingham, Sch Math Sci, Univ Pk, Nottingham NG7 2RD, England

[7] Univ Nottingham, Sch Phys & Astron, Univ Pk, Nottingham NG7 2RD, England

来源：

PHYSICAL REVIEW LETTERS | 2020年 / 125卷 / 23期

基金：

英国科学技术设施理事会; 欧盟地平线“2020”;

关键词：

SAGITTARIUS-A-ASTERISK;

D O I：

10.1103/PhysRevLett.125.231101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study scalar fields in a black hole background and show that, when the scalar is suitably coupled to curvature, rapid rotation can induce a tachyonic instability. This instability, which is the hallmark of spontaneous scalarization in the linearized regime, is expected to he quenched by nonlinearities and endow the black hole with scalar hair. Hence, our results demonstrate the existence of a broad class of theories that share the same stationary black hole solutions with general relativity at low spins, but which exhibit black hole hair at sufficiently high spins (a/M greater than or similar to 0.5). This result has clear implications for tests of general relativity and the nature of black holes with gravitational and electromagnetic observations.

引用

页数：6

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