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arXiv · 1002.1075

Cascading Gravity is Ghost Free

Claudia de Rham·Justin Khoury·Andrew J. Tolley
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Abstract

We perform a full perturbative stability analysis of the 6D cascading gravity model in the presence of 3-brane tension. We demonstrate that for sufficiently large tension on the (flat) 3-brane, there are no ghosts at the perturbative level, consistent with results that had previously only been obtained in a specific 5D decoupling limit. These results establish the cascading gravity framework as a consistent infrared modification of gravity.

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Claudia de Rham, Justin Khoury, Andrew J. Tolley. 2010-06-24. Cascading Gravity is Ghost Free. https://doi.org/10.1103/physrevd.81.124027

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