论文标题
通货膨胀期间的共振矢量暗物质生产
Resonant Vector Dark Matter Production during Inflation
论文作者
论文摘要
我们提出了一种新的机制，可以通过在通货膨胀期间产生载体暗物质产生观察到的暗物质能密度。矢量暗物质的共振放大是通过与Adflaton的振荡耦合引起的MATHIEU不稳定性实现的，该振荡耦合最早可能在通货膨胀结束前发生11.9倍。对于广泛的通货膨胀率和矢量质量尺度，成功的暗物质生产是可能的。与其他次要生产机制相比，这种情况产生了矢量暗物质密度的两个螺旋状态，同时表现出在纵向模式下产生的能量密度可忽略不计的大参数区域。这种暗物质候选者的发现不仅会解释暗物质的本质，而且可以深入了解通货膨胀潜力和通货膨胀规模。调查了允许的参数空间，并讨论了独特的现象学含义，其中包括引力波和暗物质能量密度谱。
We present a new mechanism for generating the observed dark matter energy density, through resonant production of vector dark matter during inflation. Resonant amplification of the vector dark matter is achieved through Mathieu instabilities induced by an oscillatory coupling with the inflaton, which can occur as early as 11.9 e-folds before the end of inflation. Successful dark matter production is possible for a wide range of inflationary Hubble rates and vector mass scales. This scenario generates both helicity states of the vector dark matter density in contrast to other tachyonic production mechanisms, while exhibiting large parameter regions with negligible energy density generated in the longitudinal mode. The discovery of this dark matter candidate will not only explain the nature of dark matter but provide insight into the inflationary potential and the scale of inflation. The allowed parameter space is surveyed and the unique phenomenological implications are discussed, which include gravitational waves and the dark matter energy density spectrum.
