论文标题
新型毛茸茸的黑洞的存在和不稳定在移动对称的Horndeski理论中
Existence and Instability of Novel Hairy Black Holes in Shift-symmetric Horndeski Theories
论文作者
论文摘要
换档对称的Horndeski理论接受了一类有趣的Schwarzschild黑洞解决方案，表现出时间依赖于时间的标量头发。通过利用Lemaître坐标，我们分析了这些类型的黑洞的扰动，并证明黑洞背景周围的标量扰动不可避免地具有梯度不稳定性。结合了先前确定的结果，这种新发现的不稳定规则排除了黑洞，其中具有霍尼德斯基理论中时间依赖的标量头发。
Shift-symmetric Horndeski theories admit an interesting class of Schwarzschild black hole solutions exhibiting time-dependent scalar hair. By making use of Lemaître coordinates, we analyze perturbations around these types of black holes, and demonstrate that scalar perturbations around black hole backgrounds inevitably have gradient instabilities. Taken together with previously established results, this newly-discovered instability rules out black holes with time-dependent scalar hair in Horndeski theories.
