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Post Info TOPIC: Galileon field
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RE: Galileon field
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Title: Galileons in the Sky
Authors: Claudia de Rham

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 emphasise their relation with the Lovelock invariant in braneworld models. The existence of a non-renormalisation 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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Blobrana


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Title: A no-hair theorem for the galileon
Authors: Lam Hui, Alberto Nicolis

We consider a galileon field coupled to gravity. The standard no-hair theorems do not apply, because of the galileon's peculiar derivative interactions. We prove that, nonetheless, static spherically symmetric black holes cannot sustain non-trivial galileon profiles. Our theorem holds regardless of whether there are non-minimal couplings between the galileon and gravity of the covariant galileon type.

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