论文标题
计时超级限制
Clocking Out Superradiance Limits
论文作者
论文摘要
黑洞空间时间的超级不稳定性已用于将极限限制在超轻的玻感颗粒上。我们表明这些限制是依赖模型的。尽管该模式的初始生长是重力，因此模型无关，但对新粒子的限制的能力需要不受限制地生长到大数量密度。通过高维操作员介导的粒子和其他轻度自由度之间的非线性相互作用可以抑制这种生长，从而消除极限。但是，这些非线性也可能破坏这些光颗粒的宇宙丰度，这是它们在几个实验中发现的有吸引力的途径。我们研究了QCD轴轴的具体例子，并表明构建模型很容易在这些模型中消除超级范围的限制，同时保留其宇宙丰度。
The superradiant instability of black hole space-times has been used to place limits on ultra-light bosonic particles. We show that these limits are model dependent. While the initial growth of the mode is gravitational and thus model independent, the ability to place a limit on new particles requires the mode to grow unhindered to a large number density. Non-linear interactions between the particle and other light degrees of freedom that are mediated through higher dimension operators can damp this growth, eliminating the limit. However, these non-linearities may also destroy a cosmic abundance of these light particles, an attractive avenue for their discovery in several experiments. We study the specific example of the QCD axion and show that it is easy to construct models where these non-linearities eliminate limits from superradiance while preserving their cosmic abundance.
