Michel Pannier (University of Jena) donnera le séminaire suivant dans la salle Penrose du bâtiment B4 :
Probing Flat-Space Holography in 3D
The Holographic Principle, though its best studied application being the AdS/CFT duality, is expected to hold in rather general circumstances. One may thus try to test and extend its applicability on different examples, such as asymptotically de Sitter or flat space-times. The latter is the idea of the talk, in particular focusing on the introduction of propagating degrees of freedom to an otherwise purely topological three-dimensional theory of gravity. I will present a candidate for a possible linear scalar coupling equation, its relation to a certain higher-spin algebra and the construction of Wilson lines as holographic probes.