Speaker
Julien Lesgourgues
Description
I will start with a brief review on current neutrino mass bounds, which are inevitably related to the current debate on tensions between observables and departures from the LambdaCDM model. I will mention additional properties of dark matter and dark radiation that will be exciting to test with forthcoming experiments. These models are difficult to integrate into a precise theoretical framework for predicting the non-linear statistics of large scale structure. I will hint at some techniques related to gauge transformations that can ease this problem considerably.
