Séminaire de Physique ThéoriqueAsymptotically flat fluid/gravity duality
Luca Ciambelli (Ecole Polytechnique)
jeudi 13 juin 2019 14:00 - Tours - Salle 1180 (Bât E2)
This talk is devoted to the flat limit of the AdS fluid/gravity correspondence. We will firstly define the latter in 4 bulk dimensions, showing the relevance of the so-called derivative expansion. Secondly, we will argue that the bulk flat limit (vanishing cosmological constant) is dual to the boundary Carrollian limit, in which the speed of light is sent to zero. This limit will be carefully analyzed geometrically and in the hydrodynamic theory. We will eventually construct a holographic mapping between conformal Carrollian fluids living on null infinity and Ricci-flat solutions of Einstein equations. Time permitting, explicit examples will be studied, corroborating our findings.