890 citations · 2.4k across the 10 of their papers we have counts for
3 papers · 1 filter
One-loop f(R) Gravitational Modified Models
Guido Cognola, Sergio Zerbini
The one-loop quantisation of a general class of modified gravity models around a classical de Sitter background is presented. Application to the stability of the models is addresse…
Multi-(super)graviton theory on topologically non-trivial backgrounds
Guido Cognola, Emilio Elizalde, Sergio Zerbini
It is shown that in some multi-supergraviton models, the contributions to the effective potential due to a non-trivial topology can be positive, giving rise in this way to a positi…
One-loop f(R) gravity in de Sitter universe
Guido Cognola, Emilio Elizalde, Shin'ichi Nojiri +2
Motivated by the dark energy issue, the one-loop quantization approach for a family of relativistic cosmological theories is discussed in some detail. Specifically, general …