Abstract: In this talk, asymptotic symmetries in Carrollian gravitational theories in 3+1 space and time dimensions obtained from “magnetic” and “electric” ultrarelativistic contractions of General Relativity are analyzed. In both cases, parity conditions are needed to guarantee a finite symplectic term, in analogy with Einstein gravity. In particular, it is shown that from the point of view of the asymptotic symmetries, the magnetic contraction can be seen as a smooth limit of General Relativity, in contrast to its electric counterpart.
https://tuwien.zoom.us/j/95423793232?pwd=OEhvemhuaUcvbTVYS0gwV3F3amNidz09