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Gravitational waves in warped compactifications

Abstract : We study gravitational waves propagating on a warped Minkowski space-time with D-4 compact extra dimensions. While Kaluza-Klein scales are typically too high for any current detection, we analyse how the warp factor changes the Kaluza-Klein spectrum of gravitational waves. To that end we provide a complete and explicit expression for the warp factor on a d-dimensional torus. This expression differs from that of braneworld models and should find further uses in string compactifications. We then evaluate the Kaluza-Klein spectrum of gravitational waves. Our preliminary numerical results indicate not only a deviation from the standard toroidal spectrum, but also that the first masses get lowered due to the warp factor.
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Contributor : Inspire Hep <>
Submitted on : Wednesday, November 27, 2019 - 2:33:10 AM
Last modification on : Wednesday, March 25, 2020 - 6:15:28 PM

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David Andriot, Dimitrios Tsimpis. Gravitational waves in warped compactifications. 2019. ⟨hal-02382020⟩



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