Comment on "Time and a Physical Hamiltonian for Quantum Gravity" [PDF]
Jedrzej ŚwieżewskiThe aim of this comment is to present a simple argument showing that in the irrotational dust model the Hamilotnian constraint is indeed free of the square root if the time-gauge is chosen. This feature requires no additional assumptions, namely no choices of signs.View original: http://arxiv.org/abs/1307.4687
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