论文标题
围绕旋转常规黑洞和虫洞的标量扰动：准正常模式，Ergoregion不稳定和超沉淀
Scalar perturbations around rotating regular black holes and wormholes: quasi-normal modes, ergoregion instability and superradiance
论文作者
论文摘要
我们在Kerr弹跳背景上研究标量测试场扰动，即一个旋转的常规黑洞和/或可模仿Kerr黑洞的旋转旋转黑洞和/或可旋转的可遍历的虫洞。我们在常规黑洞和虫洞分支中计算了无质量场的准正常模式，从而确认了前者的稳定性，并确定了使后者不稳定的一组增长模式。我们进一步计算了常规黑洞分支中的无质量和庞大田地的超沉淀因子，证实了这些物体超辐射，尽管比相应的kerr黑洞的程度较小。
We study scalar test-field perturbations on top of a Kerr--black-bounce background, i.e. a family of rotating regular black holes and/or rotating traversable wormholes that can mimic Kerr black holes. We compute the quasi-normal modes for a massless field in both the regular black holes and wormhole branches, confirming the stability of the former and identifying a set of growing modes that renders the latter unstable. We further compute the superradiance amplification factors, for massless and massive fields, in the regular black hole branch, confirming that these objects superradiate, though to a lesser degree than the corresponding Kerr black holes.
