论文标题
自旋引起的黑洞自发标量
Spin-induced black hole spontaneous scalarization
论文作者
论文摘要
我们在黑洞背景下研究标量场，并表明，当标量适当耦合到曲率时，快速旋转会诱导速度不稳定。这种不稳定性是线性化制度中自发标量的标志性的标志，预计将被非线性淬灭，并赋予黑洞中有标量头发。因此，我们的结果表明存在一系列广泛的理论，这些理论在低旋转时具有相同的相对性共享相同的固定黑洞溶液，但在足够高的自旋（$ a/m \ gtrsim 0.5 $）上表现出黑洞头发。该结果对具有引力和电磁观测的黑洞的一般相对性和黑洞的性质具有明显的影响。
We study scalar fields in a black hole background and show that, when the scalar is suitably coupled to curvature, rapid rotation can induce a tachyonic instability. This instability, which is the hallmark of spontaneous scalarization in the linearized regime, is expected to be quenched by nonlinearities and endow the black hole with scalar hair. Hence, our results demonstrate the existence of a broad class of theories that share the same stationary black hole solutions with general relativity at low spins, but which exhibit black hole hair at sufficiently high spins ($a/M\gtrsim 0.5$). This result has clear implications for tests of general relativity and the nature of black holes with gravitational and electromagnetic observations.
