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- W3106423977 abstract "We present a new approach to the covariant canonical formulation of Einstein–Cartan gravity that preserves the full Lorentz group as the local gauge group. The method exploits lessons learned from gravity in 2+1 dimensions regarding the relation between gravity and a general gauge theory. The dynamical variables are simply the frame field and the spin-connection pulled-back to the hypersurface, thereby eliminating the need for simplicity constraints on the momenta. A consequence of this is a degenerate (pre)symplectic form, which appears to be a necessary feature of the Einstein–Cartan formulation. A new feature unique to this approach arises when the constraint algebra is computed: the algebra is a deformation of the de Sitter, anti-de Sitter or Poincaré algebra (depending on the value of the cosmological constant) with the deformation parameter being the conformal Weyl tensor." @default.
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- W3106423977 date "2008-11-17" @default.
- W3106423977 modified "2023-09-26" @default.
- W3106423977 title "A new perspective on covariant canonical gravity" @default.
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- W3106423977 doi "https://doi.org/10.1088/0264-9381/25/23/235017" @default.
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