Note on the symplectic structure of asymptotically flat gravity and BMS symmetries
Note on the symplectic structure of asymptotically flat gravity and BMS symmetries
The Poisson brackets of the gravitational field at null infinity play a pivotal role in establishing the equivalence between the Ward identities involving BMS charges and the soft graviton theorem. In recent literature it was noticed that, in order to reproduce the action of BMS transformations via such Poisson brackets, …