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gr-qc2002★ 3 cited
Immirzi Ambiguity in the Kinematics of Quantum General Relativity
Luis J. Garay, Guillermo A. Mena Marugan
The Immirzi ambiguity arises in loop quantum gravity when geometric operators are represented in terms of different connections that are related by means of an extended Wick transf…
gr-qc2002★ 12 cited
Quantum behavior of FRW radiation-filled universes
M. Bouhmadi-Lopez, L. J. Garay, P. F. Gonzalez-Diaz
We study the quantum vacuum fluctuations around closed Friedmann-Robertson-Walker (FRW) radiation-filled universes with nonvanishing cosmological constant. These vacuum fluctuation…