- #1

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"Roughly, at a key step in the procedure, the Hamiltonian constraint operator of [45] implicitly used a kinematic 3-metric ̊qab defined by the co-moving coordinates rather than the physical metric qab = a2̊qab (where a is the scale factor). When this is corrected, the new, improved Hamiltonian constraint again resolves the singularity and, at the same time, is free from all three drawbacks of the μo scheme."

from the following paper

https://arxiv.org/pdf/1108.0893.pdf