论文标题
自旋引起的标量黑洞
Spin-induced scalarized black holes
论文作者
论文摘要
最近显示，标量场与高斯 - 骨网不变$ \ Mathcal {g} $相结合，可以在Kerr黑洞附近发生自旋诱导的线性速度不稳定性。这种不稳定性仅在无量纲的旋转$ j $足够大后才出现，即$ j \ gtrsim 0.5 $。速度不稳定性是自发标量的标志。为了说明目的，将重点放在确实表现出这种不稳定的一类理论上，我们表明，一旦超过自旋诱导的不稳定性阈值，固定的，旋转的黑洞溶液确实具有标量头发，而Kerr溶液则描述了低于阈值的黑洞。我们的结果为自旋诱导的黑洞标量提供了强有力的支持。
It was recently shown that a scalar field suitably coupled to the Gauss-Bonnet invariant $\mathcal{G}$ can undergo a spin-induced linear tachyonic instability near a Kerr black hole. This instability appears only once the dimensionless spin $j$ is sufficiently large, that is, $j \gtrsim 0.5$. A tachyonic instability is the hallmark of spontaneous scalarization. Focusing, for illustrative purposes, on a class of theories that do exhibit this instability, we show that stationary, rotating black hole solutions do indeed have scalar hair once the spin-induced instability threshold is exceeded, while black holes that lie below the threshold are described by the Kerr solution. Our results provide strong support for spin-induced black hole scalarization.
