Scalar perturbations and stability of a loop quantum corrected Kruskal black hole

We investigate the massless scalar field perturbations of a new loop quantum gravity motivated regular black hole proposed by Ashtekar {\it et al.} in [Phys.Rev.Lett. 121, 241301 (2018), Phys.Rev.D 98, 126003 (2018)]. The spacetime this is distinguished its asymptotic properties: Schwarzschild coordinates one metric functions diverges as $r\to \infty$ even though asymptotically flat. show that despite unusual behavior, quasinormal mode potential well defined everywhere when are used. propose useful approximate form metric, which allows us to produce frequencies and ringdown waveforms high accuracy with manageable computation times. Our results indicate model stable against perturbations. that, compared hole, oscillates higher frequency less damping. also observe qualitative difference power-law tail waveform between hole. This suggests corrections affect behavior waves at large distances from