Quasinormal modes of quantum corrected black hole in the non-Ricci-flat spacetime perturbation.

We investigate the quasinormal modes (QNMs) of non-Ricci-flat quantum corrected black hole spacetime. We calculated the case of higher multipole l compared to Konoplya's work (Phys Lett B 804:135363, 2020). Because it is very difficult for Wentzel–Kramers–Brillouin method to calculate, we use Mashhoon (P o ¨ schl–Teller) method and asymptotic iteration method (AIM) to calculate the QNMs of quantum corrected black hole, and obtain the numerical results. We conclude that AIM takes less time to calculate and can ensure accuracy. In addition, we supplement the time-domain profiles that is not shown in Konoplya's work. [ABSTRACT FROM AUTHOR]