论文标题
光线的峰值生产深色光子暗物质
Peaky Production of Light Dark Photon Dark Matter
论文作者
论文摘要
我们探索了一种机制，可以通过深色光子场和观众标量场之间的耦合产生浅暗光子暗物质，该耦合在宇宙的通货膨胀膨胀中不起作用，同时在通货膨胀期间降低其潜力。观众场的运动有效地产生具有较大波长的暗光子，在物质辐射平等之前，它们成为非相关主义。波长的光谱是峰值的，因此可以逃避来自异神经扰动的约束。然后，在深色光子质量范围内实现了正确的遗物丰度，降低到$ 10^{ - 13} \ \ text {ev} $。我们的机制有利于可以在以后的观察中测试的高规模通货膨胀模型。此外，通货膨胀期间深色光子场的波动会在未来的空间基层干涉仪和/或脉冲星时正时阵列实验中检测到引力波。
We explore a mechanism to produce a light dark photon dark matter through a coupling between the dark photon field and a spectator scalar field which plays no role in the inflationary expansion of the Universe while rolling down its potential during the inflation. The motion of the spectator field efficiently produces dark photons with large wavelengths which become non-relativistic before the time of matter-radiation equality. The spectrum of the wavelengths is peaky so that the constraint from the isocurvature perturbation can be evaded. The correct relic abundance is then achieved over a wide range of the dark photon mass down to $10^{-13} \ \text{eV}$. Our mechanism favors high-scale inflation models which can be tested in future observations. Furthermore, fluctuations of the dark photon field during inflation produce gravitational waves detectable at future space-based interferometers and/or pulsar timing array experiments.
