4 papers
Effective potentials for de Sitter and anti de Sitter quantum fields
Alfio Bonanno, Sergio Luigi Cacciatori, Ugo Moschella
We derive a systematic treatment of one-loop effective potentials for interacting scalar fields in curved spacetimes, providing a general formula valid in arbitrary geometries and…
Gauge and parametrization dependence of Quantum Einstein Gravity within the Proper Time flow
Alfio Bonanno, Giovanni Oglialoro, Dario Zappalà
Proper time functional flow equations have garnered significant attention in recent years, as they are particularly suitable in analyzing non-perturbative contexts. By resorting to…
Proper-time flow equation and non-local truncations in quantum gravity
E. M. Glaviano, A. Bonanno
We study the flow of the non-local truncation in quantum gravity and we focus in particular on the Polyakov effective action for a non-minimally coupled scalar field on a two dimen…
Spontaneous breaking of diffeomorphism invariance in conformally reduced quantum gravity
G. Giacometti, A. Bonanno, S. Plumari +1
We study the spontaneous breaking of diffeomorphism invariance using the proper-time non-perturbative flow equation in quantum gravity. In particular, we analyze the structure of t…