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Journal Article

Signatures of extra dimensions in gravitational waves

MPS-Authors
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Andriot,  David
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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1704.07392.pdf
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Citation

Andriot, D., & Gómez, G. L. (2017). Signatures of extra dimensions in gravitational waves. Journal of Cosmology and Astroparticle Physics, 2017(06): 048. doi:10.1088/1475-7516/2017/06/048.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-2122-F
Abstract
Considering gravitational waves propagating on the most general 4+N-dimensional space-time, we investigate the effects due to the N extra dimensions on the four-dimensional waves. All wave equations are derived in general and discussed. On Minkowski4 times an arbitrary Ricci-flat compact manifold, we find: a massless wave with an additional polarization, the breathing mode, and extra waves with high frequencies fixed by Kaluza-Klein masses. We discuss whether these two effects could be observed.