PIRSA:15120022

BMS Symmetry in Three Dimensions

Oblak, B. (2015). BMS Symmetry in Three Dimensions. Perimeter Institute. https://pirsa.org/15120022

Oblak, Blagoje. BMS Symmetry in Three Dimensions. Perimeter Institute, Dec. 08, 2015, https://pirsa.org/15120022 

          @misc{ pirsa_PIRSA:15120022,
            doi = {10.48660/15120022},
            url = {https://pirsa.org/15120022},
            author = {Oblak, Blagoje},
            keywords = {Quantum Gravity},
            language = {en},
            title = {BMS Symmetry in Three Dimensions},
            publisher = {Perimeter Institute},
            year = {2015},
            month = {dec},
            note = {PIRSA:15120022 see, \url{https://pirsa.org}}
          }

Blagoje Oblak

Université Libre de Bruxelles

Talk number
PIRSA:15120022
Collection
Talk Type
Subject
Abstract

In this talk I will sketch the relation between unitary representations of the BMS3 group and three-dimensional, asymptotically flat gravity. More precisely, after giving an exact definition of the BMS group in three dimensions, I will argue that its unitary representations are classified by orbits of CFT stress tensors under conformal transformations. These stress tensors, in turn, can be interpreted as Bondi mass aspects for asymptotically flat metrics. I will also show how one can compute characters of the BMS3 group, which coincide with suitable gravitational one-loop partition functions