论文标题
灰体因子和鹰辐射的稀疏性来自带电的球形黑洞，带标量头头发
Greybody factor and sparsity of Hawking radiation from a charged spherical black hole with scalar hair
论文作者
论文摘要
“无毛”猜想声称，对于球形对称的黑洞，只有关于黑洞的质量和电荷的信息，可以提供给外部观察者。但是，“无头”猜想有许多反例。在这项工作中，我们考虑了（3+1）尺寸的“无头”猜想的特定反面，即，带有标量头发的静态球形对称的黑洞。我们在灰体因素上提供半分析界，并研究无质量无负荷标量场的鹰辐射的稀疏性。我们的结果表明，标量和电荷对灰体因子和鹰辐射级联的稀疏性有反对贡献。同样，随着黑洞（ADM）质量的减少，灰体因子降低，鹰发射光谱变得更加稀疏。
The `no-hair' conjecture claims that for a spherically symmetric black hole, only the information regarding the mass and charge of the black hole is available to an external observer. However, there are numerous counterexamples to the `no-hair' conjecture. In this work, we consider a particular counter-example to the `no-hair' conjecture in (3+1) dimensions, namely, a static spherically symmetric charged black hole with a scalar hair. We provide semi-analytic bounds on the greybody factors and study the sparsity of Hawking radiation of mass-less uncharged scalar fields. Our results show that the scalar and electric charges contribute oppositely to the greybody factor and the sparsity of the Hawking radiation cascade. Also, the greybody factor decreases and the Hawking emission spectra become more sparse with the reduction in the black hole (ADM) mass.
