Addendum: Observables for General Relativity related to geometry
arXiv:1503.07438 · doi:10.1007/JHEP04(2015)075
Abstract
In this addendum we clarify a point which strengthens one of the results from [the original paper]. Namely, we show that the algebra of the observables $F(r,θ)$ is yet simpler then it was described in [the original paper]. This is an important point, because with this simplification an important subalgebra becomes canonical, allowing for a natural reduction of the phase space.
4 pages