Quasinormal modes of a charged loop quantum black hole

This study presents a systematic investigation of quasinormal modes (QNMs) for probe fields---massless/massive scalar and Dirac fields---around a charged loop quantum gravity black hole (LQG-BH) characterized by the quantum parameter ${b}_{0}$ and the charge parameter $Q$. Through spectral analysis of quasinormal frequencies (QNFs), we uncover a distinct overtone outburst driven by quantum gravity effects, prominently manifested in the scalar field spectrum with the multipole quantum number $l=0$. Both the outburst and its accompanying oscillatory patterns grow more pronounced with increasing overtone numbers. In contrast, massless scalar fields with $l>1$ and Dirac fields exhibit delayed outburst development, with nonmonotonic behavior dominating the first two overtones. Notably, increasing the charge $Q$ universally suppresses quantum-gravity-induced features, including outbursts, nonmonotonicity, and oscillations. Furthermore, we present evidence suggesting the presence of quasiresonances in the massive scalar QNM spectrum, thereby illustrating the potential for the emergence of arbitrarily long-lived modes in this charged LQG spacetime. These findings establish a robust and universal interplay between quantum gravity effects and charge dynamics, providing new insights into the spectral properties of quantum-corrected BHs.