Cascading gravity: Extending the dvali-gbadadze-porrati model to higher dimension

Claudia De Rham; Gia Dvali; Stefan Hofmann; Justin Khoury; Oriol Pujolàs; Michele Redi; Andrew J. Tolley

doi:10.1103/PhysRevLett.100.251603

Cascading gravity: Extending the dvali-gbadadze-porrati model to higher dimension

Claudia De Rham, Gia Dvali, Stefan Hofmann, Justin Khoury, Oriol Pujolàs, Michele Redi, Andrew J. Tolley

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English (US)
Article number	251603
Journal	Physical Review Letters
Volume	100
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.100.251603
State	Published - Jun 27 2008

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.100.251603

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abstract = "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.",

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AU - Hofmann, Stefan

AU - Khoury, Justin

AU - Pujolàs, Oriol

AU - Redi, Michele

AU - Tolley, Andrew J.

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AB - 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.

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Cascading gravity: Extending the dvali-gbadadze-porrati model to higher dimension

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