21 citations · 42 across the 5 of their papers we have counts for
6 papers
Perturbations and phenomenology of compact objects in quantum gravity theories
Andrea Spina
This thesis investigates the perturbative dynamics and phenomenology of compact objects in two approaches to quantum gravity: quadratic gravity and asymptotic safety. Linear pertur…
Black Holes in Asymptotic Safety: A Review of Solutions and Phenomenology
Andrea Spina
Asymptotic Safety offers a conservative and predictive framework for quantum gravity, based on the existence of a renormalization group fixed point that ensures ultraviolet complet…
Veiled Singularities in Einstein-Weyl Gravity: Stability and Physical Interpretation of Horizonless Solutions
Alfio M. Bonanno, Samuele Silveravalle, Andrea Spina
We investigate a class of horizonless solutions in Einstein-Weyl gravity, corresponding to the so-called attractive naked singularities of the (-2,2) type. In contrast to General R…
Regular Black Holes from Proper-Time flow in Quantum Gravity and their Quasinormal modes, Shadow and Hawking radiation
Alfio Bonanno, Roman A. Konoplya, Giovanni Oglialoro +1
We derive a class of regular black holes from the proper-time renormalization group approach to asymptotically safe gravity. A central challenge is the robustness of physical predi…
Time Evolution of Black Hole Perturbations in Quadratic Gravity
Roman A. Konoplya, Andrea Spina, Alexander Zhidenko
We study the full time-domain evolution of gravitational perturbations in black hole spacetimes arising in Einstein-Weyl gravity, a renormalizable extension of general relativity c…
Scalar Perturbations of Regular Black Holes derived from a Non-Singular Collapse Model in Asymptotic Safety
Andrea Spina, Samuele Silveravalle, Alfio Bonanno
We investigate the massless scalar field perturbations, focusing on the quasinormal modes spectrum and the ringdown waveform of regular black hole spacetimes derived within the Asy…