Quasinormal modes and absorption probabilities of spin-3/2 fields in D-dimensional Reissner-Nordström black hole spacetimes

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题名:	Quasinormal modes and absorption probabilities of spin-3/2 fields in D-dimensional Reissner-Nordström black hole spacetimes
作者:	Chen, C.-H.;Cho, H. T.;Cornell, A. S.;Harmsen, G.;Ngcobo, X.
日期:	2018-01-25
上传时间:	2019-10-10 12:10:13 (UTC+8)
出版者:	American Physical Society
摘要:	In this paper we consider spin- 3/2 fields in a D-dimensional Reissner-Nordström black hole spacetime. As these spacetimes are not Ricci flat, it is necessary to modify the covariant derivative to the supercovariant derivative, by including terms related to the background electromagnetic fields, so as to maintain the gauge symmetry. Using this supercovariant derivative we arrive at the corresponding Rarita-Schwinger equation in a charged black hole background. As in our previous works, we exploit the spherical symmetry of the spacetime and use the eigenspinor vectors on an N sphere to derive the radial equations for both nontransverse-traceless (non-TT) modes and TT modes. We then determine the quasinormal mode and absorption probabilities of the associated gauge-invariant variables using the WKB approximation and the asymptotic iteration method. We then concentrate on how these quantities change with the charge of the black hole, especially when they reach the extremal limits.
關聯:	Physical Review D 97, 024038
DOI:	10.1103/PhysRevD.97.024038
显示于类别:	[物理學系暨研究所] 期刊論文

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