Galileons in the Sky

Claudia de Rham

doi:10.1016/j.crhy.2012.04.006

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arXiv · 1204.5492

Galileons in the Sky

Claudia de Rham

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Abstract

We review the different frameworks in which Galileon scalar fields have been seen to emerge such an in DGP, New Massive Gravity and Ghost-free massive Gravity and emphasize their relation with the Lovelock invariant in braneworld models. The existence of a non-renormalization theorem for Galileon scalar fields makes them especially attractive candidates for inflation as well as for late-time acceleration. In particular we review the self-accelerating and degravitating branches of solutions present in Galileon models when arising from Massive Gravity and discuss their phenomenology.

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Claudia de Rham. 2013-08-16. Galileons in the Sky. https://doi.org/10.1016/j.crhy.2012.04.006

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