Arbitrarily long-lived quasinormal modes in a wormhole background
Abstract
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.
Cite
@article{arxiv.1911.05246,
title = {Arbitrarily long-lived quasinormal modes in a wormhole background},
author = {M. S. Churilova and R. A. Konoplya and A. Zhidenko},
journal= {arXiv preprint arXiv:1911.05246},
year = {2020}
}
Comments
7 pages, revtex, minor changes to match the version accepted for publication in Physics Letters B