PIRSA:17060022 Conference Other

DOI10.48660/17060022

Conference/School: PI Day

Hopfmueller, F. (2017). Gravity degrees of freedom on a null surface. Perimeter Institute. https://pirsa.org/17060022

Hopfmueller, Florian. Gravity degrees of freedom on a null surface. Perimeter Institute, Jun. 01, 2017, https://pirsa.org/17060022 

@misc{ pirsa_PIRSA:17060022,
  doi = {10.48660/17060022},
  url = {https://pirsa.org/17060022},
  author = {Hopfmueller, Florian},
  keywords = {Other},
  language = {en},
  title = {Gravity degrees of freedom on a null surface},
  publisher = {Perimeter Institute},
  year = {2017},
  month = {jun},
  note = {PIRSA:17060022 see, \url{https://pirsa.org}}
}

Abstract

A canonical analysis for general relativity is performed on a null surface without fixing the diffeomorphism gauge, and the canonical pairs of configuration and momentum variables are derived. Next to the well-known spin-2 pair, also spin-1 and spin-0 pairs are identified. The boundary action for a null boundary segment of spacetime is obtained, including terms on codimension two corners. FH, Laurent Freidel arXiv:1611.03096, Phys. Rev. D 95, 104006 (2017)

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