Hawking radiation and propagation of massive charged scalar field on a three-dimensional Godel black hole

被引：43

作者：

Gonzalez, P. A. ^{[1
]}

Ovgun, Ali ^{[2
,3
,4
,5
]}

Saavedra, Joel ^{[2
]}

Vasquez, Yerko ^{[6
]}

机构：

[1] Univ Diego Portales, Fac Ingn & Ciencias, Ave Ejercito Libertador 441,Casilla 298-V, Santiago, Chile

[2] Pontificia Univ Catolica Valparaiso, Inst Fis, Casilla 4950, Valparaiso, Chile

[3] Eastern Mediterranean Univ, Arts & Sci Fac, Phys Dept, Via Mersin 10, Famagusta, North Cyprus, Turkey

[4] Calif State Univ Fresno, Dept Phys, Fresno, CA 93740 USA

[5] Stanford Univ, Stanford Inst Theoret Phys, Stanford, CA 94305 USA

[6] Univ La Serena, Fac Ciencias, Dept Fis & Astron, Av Cisternas 1200, La Serena, Chile

来源：

GENERAL RELATIVITY AND GRAVITATION | 2018年 / 50卷 / 06期

关键词：

Godel black hole; Hawking radiation; Quantum tunneling; Quasinormal modes; Greybody factors; QUASI-NORMAL MODES; GREYBODY FACTORS; STABILITY;

D O I：

10.1007/s10714-018-2389-x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper we consider the three-dimensional Godel black hole as a background and we study the vector particle tunneling from this background in order to obtain the Hawking temperature. Then, we study the propagation of a massive charged scalar field and we find the quasinormal modes analytically, which turns out be unstable as a consequence of the existence of closed time-like curves. Also, we consider the flux at the horizon and at infinity, and we compute the reflection and transmission coefficients as well as the absorption cross section. Mainly, we show that massive charged scalar waves can be superradiantly amplified by the three-dimensional Godel black hole and that the coefficients have an oscillatory behavior. Moreover, the absorption cross section is null at the high frequency limit and for certain values of the frequency.

引用

页数：22

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