activity
20102026
most citedLow-energy effects in a higher-derivative gravity model with real and complex massive poles

97 citations · 679 across the 33 of their papers we have counts for

collaborators

34 papers

gr-qc2026

Rotating near-horizon extreme geometries in quadratic gravity

Breno L. Giacchini, Ivan Kolář

Rotating near-horizon extreme solutions of quadratic gravity are analyzed combining power series expansions and numerical calculations. Restricting to geometries with symmetries of…

gr-qc2026

Static spherically symmetric Kundt vacuum solutions of higher-derivative gravities

Breno L. Giacchini, Ivan Kolář, Vojtěch Pravda +1

We study static spherically symmetric Kundt solutions to the vacuum field equations of quadratic gravity with a cosmological constant, as well as specific models of six-derivative…

gr-qc2025

Effective delta sources and Newtonian limit in nonlocal gravity

Thomas M. Sangy, Nicolò Burzillà, Breno L. Giacchini +1

We investigate the Newtonian limit of a class of nonlocal gravity models with exponential form factors . Our main goal is to identify simil…

gr-qc2025★ 1 cited

Spherically symmetric solutions in quasi-local Einstein-Weyl gravity

Johanna Borissova, Breno L. Giacchini, Aaron Held

Quantum-gravitational effective actions with higher-derivative and non-local operators are expected to regularize the singularities of general relativity. Here we focus on quasi-lo…

gr-qc2025★ 1 cited

Neglected solutions in quadratic gravity

Breno L. Giacchini, Ivan Kolář

We report on several previously overlooked families of static spherically symmetric solutions in quadratic gravity. Our main result concerns the existence of solutions whose leadin…

gr-qc2025★ 3 cited

Black holes and other exact solutions in six-derivative gravity

Breno L. Giacchini, Ivan Kolář

We study exact static spherically symmetric vacuum solutions in generic six-derivative gravity (i.e., without assuming specific relations between the coupling constants). Using mod…