A note on the Hamiltonian constraint in canonical GR
arXiv:0711.4009 · doi:10.1088/0264-9381/25/9/095005
Abstract
The Hamiltonian constraint of the coupled Einstein-Yang-Mills-Higgs system with a cosmological constant is shown to be a pure Poisson bracket of a dimensionless functional on the phase space and the volume of the three-space. One of its potential consequences, a restriction on the eigenstates of the volume operator in a class of canonical quantum gravity theories, is also pointed out.
6 pages, the discussion is improved, two references added, accepted in Class. Quantum Grav