78 citations · 232 across the 11 of their papers we have counts for
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gr-qc2012★ 25 cited
Dirac fields, torsion and Barbero-Immirzi parameter in Cosmology
G. de Berredo-Peixoto, L. Freidel, I. L. Shapiro +1
We consider cosmological solution for Einstein gravity with massive fermions with a four-fermion coupling, which emerges from the Holst action and is related to the Barbero-Immirzi…
gr-qc2001★ 39 cited
1-Loop Divergences of Quantum Gravity Using Conformal Parametrization
G. de Berredo-Peixoto, A. B. Penna-Firme, I. L. Shapiro
We calculate the one-loop divergences for quantum gravity with cosmological constant, using new parametrization of quantum metric. The conformal factor of the metric is treated as…