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arXiv 2005.06677gr-qchep-th
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Einstein-Maxwell共形耦合标量理论中标量化黑洞的径向微扰

Radial perturbations of the scalarized black holes in Einstein-Maxwell-conformally coupled scalar theory

De-Cheng Zou, Yun Soo Myung

摘要:

利用Einstein-Maxwell共形耦合标量(EMCS)理论,利用径向微扰对标量化带电黑洞进行了稳定性分析.目标黑洞包括一个耦合参数为$α>0$的标量化带电黑洞分支以及通过Reissner-Nordström黑洞的自发标量化发现的无限个$n=0(α\ge 8.019),1(α\ge 40.84),2(α\ge 99.89),\cdots$标量化带电黑洞分支。结果表明,在具有二次和指数耦合的EMCS理论中,单支黑洞和$n = 0$黑洞对径向扰动是稳定的,而$n = 1, 2$激发的黑洞对径向扰动是不稳定的.

英文摘要:

We perform the stability analysis for the scalarized charged black holes obtained from Einstein-Maxwell-conformally coupled scalar (EMCS) theory by employing the radial perturbations. The targeting black holes include a single branch of scalarized charged black hole with the coupling parameter $α>0$ inspired by the constant scalar hairy black hole as well as infinite branches of $n=0(α\ge 8.019),1(α\ge 40.84),2(α\ge 99.89),\cdots$ scalarized charged black holes found through the spontaneous scalarization on the Reissner-Nordström black hole. It turns out that the black hole in the single branch and the $n = 0$ black hole are stable against radial perturbations, while the $n = 1, 2$ excited black holes are unstable in the EMCS theory with both quadratic and exponential couplings.

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