Quasinormal modes of an improved Schwarzschild black hole

Understand

We compute the quasinormal frequencies for scalar and electromagnetic perturbations of an improved Schwarzschild geometry in the framework of asymptotically safe gravity, which is one of the approaches to quantum gravity.

• Adopting the widely used WKB semi-classical approximation, we investigate the impact on the spectrum of the angular degree, the overtone number as well as the black hole mass.
• We summarize our numerical results in tables, and for better visualization, we show them graphically as well.
• All modes are found to be stable.