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- W1562760417 abstract "Many different cosmological models have been proposed to address the cosmological constant problem and the coincidence problem. We compare here four different models that can be used to describe an effective (time-dependent) cosmological constant $Lambda(z)$. A numerical analysis of the $Lambda(z)$ evolution obtained for each model shows that it can be used for distinguishing between all four models. Next, considering that the variation of $Lambda$ happens on cosmological timescales, we use the quasinormal modes of gravitational perturbations of Schwarzschild-de Sitter black holes at different redshifts to track the evolution of the cosmological constant. The resulting minute effect in the quasinormal mode frequencies can be most enhanced for mini black holes predicted by the recent theories with large extra dimensions." @default.
- W1562760417 created "2016-06-24" @default.
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- W1562760417 date "2015-08-07" @default.
- W1562760417 modified "2023-09-27" @default.
- W1562760417 title "A comparison between different cosmological models using black hole quasinormal modes" @default.
- W1562760417 hasPublicationYear "2015" @default.
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