April 21: Claudia de Rham (Case)
Time: 2 pm
Place: DRL 2N36
Title: Galileon Duality
Abstract: I will review how Galileon scalar fields arise in models of modified gravity. In the vicinity of matter, Galileons get screened via the Vainshtein mechanism which comes hand in hand with its own share of peculiarities: superluminalities, strong coupling and perturbative non-analyticity of the S-matrix to name a few. From a traditional effective field viewpoint such effects are typically disastrous but I will present the first hints in understanding these theories beyond the traditional perspective and their implications for modified theories of gravity.