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research article
Cascading gravity: Extending the Dvali-Gabadadze-Porrati model to higher dimension
We present a generalization of the Dvali-Gabadadze-Porrati scenario to higher codimensions which, unlike previous attempts, is free of ghost instabilities. The 4D propagator is made regular by embedding our visible 3-brane within a 4-brane, each with their own induced gravity terms, in a flat 6D bulk. The model is ghost-free if the tension on the 3-brane is larger than a certain critical value, while the induced metric remains flat. The gravitational force law "cascades" from a 6D behavior at the largest distances followed by a 5D and finally a 4D regime at the shortest scales.
Type
research article
Web of Science ID
WOS:000257230500013
Authors
de Rham, Claudia
•
Dvali, Gia
•
Hofmann, Stefan
•
Khoury, Justin
•
Pujolas, Oriol
•
Redi, Michele
•
Tolley, Andrew J.
Publication date
2008
Published in
Volume
100
Issue
25
Article Number
251603
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
November 30, 2010
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