No static black hole hairs in gravitational theories with broken Lorentz invariance
No static black hole hairs in gravitational theories with broken Lorentz invariance
复制标题
洛伦兹不变性破坏的引力理论中没有静态黑洞毛
DOI：
10.1103/physrevd.95.124053
复制
发表时间：
2017
影响因子：
5
通讯作者：
Zhu Tao
中科院分区：
文献类型：
--
作者：
Lin Kai;Mukohyama Shinji;Wang Anzhong;Zhu Tao
本文在Khronon场的速度无限大的情形下，重新讨论了Lorentz不变性破缺的引力理论中黑洞的静毛问题，其中Khronon场的声视界与普适视界重合，声视界处的边界条件退化为普适视界处通常给出的边界条件。因此，与该情况相比，在该极端情况下存在较少的边界条件。因此，预计可能存在静态毛发。然而，我们分析表明，即使在这种情况下，静态头发仍然不能存在，基于解耦极限分析。我们还考虑了有限但有的情形，得到了同样的结论.
In this paper, we revisit the issue of static hairs of black holes in gravitational theories with broken Lorentz invariance in the case that the speedof the khronon field becomes infinitely large,, for which the sound horizon of the khronon field coincides with the universal horizon, and the boundary conditions at the sound horizon reduce to those given normally at the universal horizons. As a result, fewer boundary conditions are present in this extreme case in comparison with the case. Consequently, it is expected that static hairs might exist. However, we show analytically that, even in this case, static hairs still cannot exist, based on a decoupling limit analysis. We also consider the cases in whichis finite but with, and we obtain the same conclusion.