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Multi-field galileons and higher co-dimension branes · Around

2010

Multi-field galileons and higher co-dimension branes

Hinterbichler, Kurt, Trodden, Mark, Wesley, Daniel

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In the decoupling limit, the DGP model reduces to the theory of a scalar field pi, with interactions including a specific cubic self-interaction - the galileon term.

This term, and its quartic and quintic generalizations, can be thought of as arising from a probe 3-brane in a 5-dimensional bulk with Lovelock terms on the brane and in the bulk.
We study multi-field generalizations of the galileon, and extend this probe brane view to higher co-dimensions.
We derive an extremely restrictive theory of multiple galileon fields, interacting through a quartic term controlled by a single coupling, and trace its origin to the induced brane terms coming from Lovelock invariants in the higher co-dimension bulk.

Built on

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