Arbitrarily long-lived quasinormal modes in a wormhole background

被引:47
|
作者
Churilova, M. S. [1 ,2 ]
Konoplya, R. A. [1 ,2 ,3 ]
Zhidenko, A. [4 ]
机构
[1] Silesian Univ Opava, Fac Philosophy & Sci, Inst Phys, CZ-74601 Opava, Czech Republic
[2] Silesian Univ Opava, Fac Philosophy & Sci, Res Ctr Theoret Phys & Astrophys, CZ-74601 Opava, Czech Republic
[3] RUDN Univ, Peoples Friendship Univ Russia, 6 Miklukho Maklaya St, Moscow 117198, Russia
[4] Univ Fed ABC UFABC, CMCC, Rua Abolicao, BR-09210180 Santo Andre, SP, Brazil
关键词
HOLE NORMAL-MODES; BLACK-HOLES;
D O I
10.1016/j.physletb.2020.135207
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Arbitrarily long lived modes, called quasi-resonances, are known to exist in the spectrum of massive fields for a number of black-hole backgrounds at some discrete values of mass of the field. Here we show that these modes also exist in the background of wormholes, unless a wormhole has a constant red-shift function, that is, tideless in the radial direction. The evidence of quasi-resonances is supported by calculations in the frequency and time domains, which are in a good concordance. At large masses of the field, time-domain profiles of the absolute value of the wave function have peculiar behavior: the long-lived modes dominate in the signal after a long period of power-law tails. (C) 2020 The Authors. Published by Elsevier B.V.
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页数:5
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