论文标题
Kerr-Newman黑洞的旋转电荷引起的自发标量
Spin-Charge induced spontaneous scalarization of Kerr-Newman black holes
论文作者
论文摘要
我们使用正耦合参数$α$研究了Einstein-Maxwell-scalar（EMS）理论中Kerr-Newman（KN）黑洞的速度不稳定。这对应于探索kn黑洞自发标量的开始。为此，我们使用倍重叶面方法（HFM）以数值方式求解线性标量方程。我们获得了一个3D图[$ \ log_ {10}α（a，q）$]，该图指示EMS理论中kn黑洞自发标量的发作表面。我们发现旋转参数$ a $上没有下限，但其上限由$ m^2-q^2 \ ge a^2 $给出。另外，我们确认高旋转在EMS理论中增强了kN黑洞的自发标量。
We investigate the tachyonic instability of Kerr-Newman (KN) black holes in the Einstein-Maxwell-scalar (EMS) theory with a positive coupling parameter $α$. This corresponds to exploring the onset of spontaneous scalarization for KN black holes. For this purpose, we use the hyperboloidal foliation method (HFM) to solve the linearized scalar equation numerically. We obtain a 3D graph [$\log_{10}α(a,Q)$] which indicates the onset surface for spontaneous scalarization of KN black holes in the EMS theory. We find that there is no lower bound on the rotational parameter $a$, but its upper bound is given by $M^2-Q^2 \ge a^2$. Also, we confirm that the high rotation enhances spontaneous scalarization of KN black holes in the EMS theory.
