closes in the limit as the lattice spacing is taken to zero.
This calculation was later extended to a variety of different
symmetrizations for the lattice operator and to an arbitrary
factor-ordering of the form
, with
[156]. Again, one does not find any quantum anomalies. It would be
highly desirable to extend this result to commutators involving
also the discretized Hamiltonian constraint and to find the
explicit functional form of the anomalies, if there were any.
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Discrete Approaches to Quantum Gravity in Four Dimensions
Renate Loll http://www.livingreviews.org/lrr-1998-13 © Max-Planck-Gesellschaft. ISSN 1433-8351 Problems/Comments to livrev@aei-potsdam.mpg.de |