Charged scalar perturbations around Garfinkle-Horowitz-Strominger black holes

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• 作者：Cheng-Yong Zhang^a ; ^{zhangcy@sjtu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Shao-Jun Zhang^b ; ^{sjzhang84@hotmail.com" class="auth_mail" title="E-mail the corresponding author} ; Bin Wang^a ; ^{wang_b@sjtu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 刊名：Nuclear Physics B
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：899
• 期：Complete
• 页码：37-54
• 全文大小：393 K

文摘

We examine the stability of the Garfinkle–Horowitz–Strominger (GHS) black hole under charged scalar perturbations. Employing the appropriate numerical methods, we show that the GHS black hole is always stable against charged scalar perturbations. This is different from the results obtained in the de Sitter and anti-de Sitter black holes. Furthermore, we argue that in the GHS black hole background there is no amplification of the incident charged scalar wave to cause the superradiance, so that the superradiant instability cannot exist in this spacetime.