PIRSA:18100058

Video URL

https://pirsa.org/18100058

Null conservation laws for gravity

Hopfmueller, F. (2018). Null conservation laws for gravity. Perimeter Institute for Theoretical Physics. https://pirsa.org/18100058

Hopfmueller, Florian. Null conservation laws for gravity. Perimeter Institute for Theoretical Physics, Oct. 11, 2018, https://pirsa.org/18100058 

          @misc{ scivideos_PIRSA:18100058,
            doi = {10.48660/18100058},
            url = {https://pirsa.org/18100058},
            author = {Hopfmueller, Florian},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Null conservation laws for gravity},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2018},
            month = {oct},
            note = {PIRSA:18100058 see, \url{https://scivideos.org/index.php/pirsa/18100058}}
          }

Florian Hopfmueller Nord Quantique

Talk numberPIRSA:18100058
DOI10.48660/18100058
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

I discuss the canonical degrees of freedom of metric Einstein gravity on a null surface. The constraints are interpreted as conservation equations of a boundary current. Gravitational fluxes are identified, and the Hamiltonians of diffeomorphism symmetry are discussed. Special attention is given to the role of a modification of the phase space at the boundary of the null surface. Based on 1802.06135 with Laurent Freidel.