Bondi-Metzner-Sachs algebra as an extension of the Poincaré symmetry in light-cone gravity
Bondi-Metzner-Sachs algebra as an extension of the Poincaré symmetry in light-cone gravity
A bstract We analyze possible local extensions of the Poincaré symmetry in light-cone gravity in four dimensions. We use a formalism where we represent the algebra on the two physical degrees of freedom, one with helicity 2 and the other with helicity − 2. The representation is non-linearly realized and …