Stability of Asymptotically Flat $\mathbf{(2+1)}$-Dimensional Black Holes with Gauss–Bonnet Corrections

Using integration of the wave equation in time domain, we show that scalar field perturbations around the $(2+1)$-dimensional asymptotically flat black hole with Gauss–Bonnet corrections is dynamically stable even for the near-extreme values of the coupling constant.