Central charges in the canonical realization of asymptotic symmetries: An example from three dimensional gravity

@article{Brown1986CentralCI,
  title={Central charges in the canonical realization of asymptotic symmetries: An example from three dimensional gravity},
  author={J. Brown and M. Henneaux},
  journal={Communications in Mathematical Physics},
  year={1986},
  volume={104},
  pages={207-226}
}
  • J. Brown, M. Henneaux
  • Published 1986
  • Mathematics
  • Communications in Mathematical Physics
  • It is shown that the global charges of a gauge theory may yield a nontrivial central extension of the asymptotic symmetry algebra already at the classical level. This is done by studying three dimensional gravity with a negative cosmological constant. The asymptotic symmetry group in that case is eitherR×SO(2) or the pseudo-conformal group in two dimensions, depending on the boundary conditions adopted at spatial infinity. In the latter situation, a nontrivial central charge appears in the… CONTINUE READING
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