46 citations · 124 across the 12 of their papers we have counts for
5 papers · 1 filter
Renormalizability of nonlocal quantum gravity coupled to matter
Gianluca Calcagni, Breno L. Giacchini, Leonardo Modesto +2
We extensively study the ultraviolet quantum properties of a nonlocal action for gravity nonminimally coupled to matter. The theory unifies matter and gravity in an action principl…
On the Vilkovisky-DeWitt approach and renormalization group in effective quantum gravity
Breno L. Giacchini, Tibério de Paula Netto, Ilya L. Shapiro
The effective action in quantum general relativity is strongly dependent on the gauge-fixing and parametrization of the quantum metric. As a consequence, in the effective approach…
Vilkovisky unique effective action in quantum gravity
Breno L. Giacchini, Tibério de Paula Netto, Ilya L. Shapiro
The divergent part of the one-loop Vilkovisky unique effective action for quantum Einstein gravity is evaluated in the general parametrization of the quantum field, including the s…
Background field method and nonlinear gauges
Breno L. Giacchini, Peter M. Lavrov, Ilya L. Shapiro
We present a reformulation of the background field method for Yang-Mills type theories, based on using a superalgebra of generators of BRST and background field transformations. Th…
Classical and tree-level approaches to gravitational deflection in higher-derivative gravity
Antonio Accioly, José Helayël-Neto, Breno Giacchini +1
Among the so-called classical tests of general relativity (GR), light bending has been confirmed with an accuracy that increases as times goes by. Here we study the gravitational d…