论文标题
标量颗粒的排放蒸发Kerr-Black弹跳
Evaporation of a Kerr-black-bounce by emission of scalar particles
论文作者
论文摘要
我们研究一个正常的旋转黑洞，在单个标量场的鹰发射下蒸发。黑洞由Kerr-Black Bounce指标描述，其几乎极端正规化参数$ \ ell = 0.99r _+$。我们将结果与在相同条件下蒸发的Kerr黑洞进行比较。首先，我们计算灰色因素，并表明Kerr-Black弹跳朝着具有$ A_* \ sim 0.47 $的非Schwartzchild样渐近状态演变，与Kerr Black Hole不同，Kerr Black Hole的渐近性旋转将为$ A_* \ sim 0.5555 $。我们表明，该结果取决于灰体因子差异的综合贡献以及受正规化参数影响的表面重力。我们还讨论了表面重力如何影响温度和初级发射率，并相对于Kerr黑洞减少了这些数量。因此，常规黑洞的寿命更长。最后，我们简要评论了要调查黑洞的超越途径结构的可能性，从而利用了其鹰的排放。
We study a regular rotating black hole evaporating under the Hawking emission of a single scalar field. The black hole is described by the Kerr-black-bounce metric with a nearly extremal regularizing parameter $\ell=0.99r_+$. We compare the results with a Kerr black hole evaporating under the same conditions. Firstly, we compute the gray-body factors and show that the Kerr-black-bounce evolves towards a non-Schwartzchild-like asymptotic state with $a_* \sim 0.47$, differently from a Kerr black hole whose asymptotic spin would be $a_* \sim 0.555$. We show that this result depends on the combined contributions of the differences in the gray-body factors and the surface gravity affected by the regularizing parameter. We also discuss how the surface gravity affects the temperature and the primary emissivity and decreases those quantities with respect to the Kerr black hole. Consequently, the regular black hole has a longer lifetime. Finally, we briefly comment on the possibility of investigating the beyond-the-horizon structure of a black hole exploiting its Hawking emission.
