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- W4384029013 abstract "We study scalar perturbations of topological solitons, smooth horizonless solutions in five-dimensional Einstein-Maxwell theory that correspond to coherent states of gravity via the dynamics of extra compact dimensions. First, we compute scalar quasinormal modes for topological stars that have a single unstable photon sphere, and we show that the spectrum is very similar to that of a black hole with the same photon sphere. Next, we study topological stars that have both a stable inner photon sphere and an unstable one. The first few quasinormal modes are localized around the inner photon sphere. The spectrum also contains ''black-hole like modes'' localized at the unstable outer photon sphere. The frequencies of these modes are similar to those of a black hole, but their imaginary part is smaller due to a cavity effect associated with the inner photon sphere. The longer damping produced by this trapping effect may have implications for black hole spectroscopy." @default.
- W4384029013 created "2023-07-13" @default.
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- W4384029013 date "2023-07-12" @default.
- W4384029013 modified "2023-10-15" @default.
- W4384029013 title "Cavity effect in the quasinormal mode spectrum of topological stars" @default.
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- W4384029013 doi "https://doi.org/10.1103/physrevd.108.024021" @default.
- W4384029013 hasPublicationYear "2023" @default.
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