Perturbing microscopic black holes inspired by noncommutativity

D. Batic, N. G. Kelkar, M. Nowakowski, K. Redway

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


We probe into the instabilities of microscopic quantum black holes. For this purpose, we study the quasinormal modes (QNMs) for a massless scalar perturbation of the noncommutative geometry inspired Schwarzschild black hole. By means of a sixth order Wentzel–Kramers–Brillouin (WKB) approximation we show that the widely used WKB method does not converge in the critical cases where instabilities show up at the third order. By employing the inverted potential method, we demonstrate that the instabilities are an artifact of the WKB method. Finally, we discuss the usefulness of the asymptotic iteration method to find the QNMs.

Original languageBritish English
Article number581
JournalEuropean Physical Journal C
Issue number7
StatePublished - 1 Jul 2019


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