161 citations · 889 across the 15 of their papers we have counts for
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gr-qc2008★ 31 cited
Indefinite oscillators and black-hole evaporation
Claus Kiefer, Joao Marto, Paulo Vargas Moniz
We discuss the dynamics of two harmonic oscillators of which one has a negative kinetic term. This model mimics the Hamiltonian in quantum geometrodynamics, which possesses an inde…
gr-qc2008★ 66 cited
Quantum geometrodynamics: whence, whither?
Claus Kiefer
Quantum geometrodynamics is canonical quantum gravity with the three-metric as the configuration variable. Its central equation is the Wheeler--DeWitt equation. Here I give an over…
gr-qc2008★ 102 cited
Measurement Analysis and Quantum Gravity
Mark Albers, Claus Kiefer, Marcel Reginatto
We consider the question of whether consistency arguments based on measurement theory show that the gravitational field must be quantized. Motivated by the argument of Eppley and H…