论文标题
旋转的常规黑洞周围的标量云形成的寿命
Lifetime of scalar cloud formation around a rotating regular black hole
论文作者
论文摘要
克尔黑洞的曲率奇异性是否会影响周围标量云形成的时间尺度？从定义上讲，标量云形成一个带有氢的绑定状态的引力原子，位于大型标量场的超级不稳定性状态（随着时间生长的准数状态）和超越（时间偿还的准结合状态）的阈值。通过采用辛普森和维瑟（Simpson and Visser）提出的一种新型的旋转空心常规黑洞，与其标准竞争对手不同，它具有渐近的Minkowski核心，我们解决了这个问题。该度量相对于标准KERR具有最小的扩展，源自单个正则化参数$ \ ell $，其长度尺寸。我们显示，将正则长度尺度$ \ ell $包括在Kerr时空中，而不会影响标准的超级不稳定性制度，标量云形成的时间尺度变短了。由于标量云形成后通过能量耗散，可以发挥重力波的连续源的作用，因此不稳定性生长时间的减少会改善新物理学的现象学检测前景，因为时间较短，天文学上的重要性越重要。
Does circumventing the curvature singularity of the Kerr black hole affects the timescale of the scalar cloud formation around it? By definition, the scalar cloud, forms a gravitational atom with hydrogen-like bound states, lying on the threshold of a massive scalar field's superradiant instability regime (time-growing quasi-bound states) and beyond (time-decaying quasi-bound states). By taking a novel type of rotating hollow regular black hole proposed by Simpson and Visser which unlike its standard rivals has an asymptotically Minkowski core, we address this question. The metric has a minimal extension relative to the standard Kerr, originating from a single regularization parameter $\ell$, with length dimension. We show with the inclusion of the regularization length scale $\ell$ into the Kerr spacetime, without affecting the standard superradiant instability regime, the timescale of scalar cloud formation gets shorter. Since the scalar cloud after its formation, via energy dissipation, can play the role of a continuum source for gravitational waves, such a reduction in the instability growth time improves the phenomenological detection prospects of new physics because the shorter the time, the more astrophysically important.
