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06 October 2022
 
  » arxiv » 1611.3096

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Gravity Degrees of Freedom on a Null Surface
Florian Hopfmüller ; Laurent Freidel ;
Date 9 Nov 2016
AbstractA 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.
Source arXiv, 1611.3096
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