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Cosmological acceleration in massive gravity

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If you have a question about this talk, please contact Camille Bonvin.

I will discuss cosmological solutions in massive gravity, that are potentially able to describe the present day acceleration of our universe with no need of any dark energy contribution. After a pedagogical review of massive gravity, I will discuss the techniques that allow to analyze the intriguing behavior of cosmological perturbations around the simplest of such cosmological solutions, presenting new and unexpected results arising at third order in a perturbative expansion.

This talk is part of the Cosmology Lunch series.

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