论文标题
自相互作用轴云的超级增长的重新归一化组分析
Renormalization group analysis of superradiant growth of self-interacting axion cloud
论文作者
论文摘要
由于可能在黑洞周围观察到来自轴突冷凝物（Axion Cloud）的重力波，因此考虑了迅速旋转黑洞周围的超光量标量场（尤其是轴）的兴趣。在此考虑的过程中，我们提出了一种新方法，以研究迅速旋转的黑洞的自相互作用的超光标量场的动力学，该黑洞使用动态的重新归化组方法。我们发现，对于相对论的云，当我们考虑从单个超级模式的云的绝热生长时，在弱的非线性方案中不会出现轴法散射超级不稳定性的饱和。这可能表明，对于相对论的轴云，一种爆炸性的现象称为Bosenova，可能不可避免地发生，至少在其进化史上一次。
There are strong interests in considering ultra-light scalar fields (especially axion) around a rapidly rotating black hole because of the possibility of observing gravitational waves from axion condensate (axion cloud) around black holes. Motivated by this consideration, we propose a new method to study the dynamics of an ultra-light scalar field with self-interaction around a rapidly rotating black hole, which uses the dynamical renormalization group method. We find that for relativistic clouds, saturation of the superradiant instability by the scattering of the axion due to the self-interaction does not occur in the weakly non-linear regime when we consider the adiabatic growth of the cloud from a single superradiant mode. This may suggest that for relativistic axion clouds, an explosive phenomenon called the Bosenova may inevitably happen, at least once in its evolutionary history.
