PIRSA:17100061

Video URL

https://pirsa.org/17100061

Surface Charges to Disentangle Physics from Gauge

Frodden, E. (2017). Surface Charges to Disentangle Physics from Gauge. Perimeter Institute for Theoretical Physics. https://pirsa.org/17100061

Frodden, Ernesto. Surface Charges to Disentangle Physics from Gauge. Perimeter Institute for Theoretical Physics, Oct. 26, 2017, https://pirsa.org/17100061 

          @misc{ scivideos_PIRSA:17100061,
            doi = {10.48660/17100061},
            url = {https://pirsa.org/17100061},
            author = {Frodden, Ernesto},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Surface Charges to Disentangle Physics from Gauge},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2017},
            month = {oct},
            note = {PIRSA:17100061 see, \url{https://scivideos.org/index.php/pirsa/17100061}}
          }

Ernesto Frodden Centro de Estudios Científicos (CECs)

Talk numberPIRSA:17100061
DOI10.48660/17100061
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

Recently it was porposed by Hawking, Perry and Strominger that an infinite number of asymptotic charges may play a role in the decription of black hole entropy. With this context in mind we review the classical definition of surface charges in 3+1 gravity (and electromagnetism) from a slighly different framework by using the tetrad-connection variables. The general derivation follows the canonical covariant symplectic formalism in the language of forms. Applications to 3+1 and 2+1 charged and rotating black hole families are briefly discussed as a check. For exact (global) symmetries it is shown to be explicitly equivalent with the 'invariant' symplectic method. Extension to Lovelock gravity are shwon. As an application the entropy expression found by Myers and Jacobson is recovered. [based on arXiv:1703.10120]