使用圆柱形电容器的宽带暗物质轴子探测
Broadband Dark Matter Axion Detection using a Cylindrical Capacitor
AI总结：
针对暗物质轴子质量不确定性大的问题，提出利用圆柱形电容器将轴子转化为振荡磁场的探测方案，结合超导环-线圈系统提升灵敏度，可实现宽质量范围的轴子搜寻。
摘要：
宇宙学轴子/类轴子粒子可构成暗物质的重要组成部分，但其质量存在很大的不确定性。本文提出利用圆柱形电容器搜寻轴子，该装置中的静电场可将暗物质轴子转化为振荡磁场。由于CP宇称为奇，轴子与电场的耦合方式和与磁场的耦合不同。轴子通过携带入射暗物质流空间信息的导数项与电场耦合，而与磁场的耦合则取决于暗物质密度。这种差异有助于轴子搜寻及理论完备性研究，尤其是在轴子质量极轻的情况下，此时磁场诱导的信号呈类直流特性。当多台探测器同时运行时，方向相关性还可用于降低动力学涨落引发的噪声。此外，圆柱形结构可将电场屏蔽在实验室之外，并将轴子诱导的磁场约束在电容器内部。产生的振荡磁场随后可由灵敏磁强计采集。在该方案中加入超导环-线圈系统可进一步提升灵敏度，并保留轴子暗物质的固有带宽。所提出的装置有望实现宽质量范围的轴子搜寻。
英文摘要：
Cosmological axions/axion-like particles can compose a significant part of dark matter; however, the uncertainty of their mass is large. Here, we propose to search the axions using a cylindrical capacitor, in which the static electric field converts dark matter axions into an oscillating magnetic field. Due to the odd CPs, the axions couple to the electric field differently compared to the magnetic field. The axion couples to the electric field via a derivative that carries spatial information of incoming dark matter flux, while the coupling to the magnetic field depends on the dark matter density. This difference could be helpful in searching the axions and studies of the integrity of the theory, especially when the axions are very light, in which case the magnetic field-induced signal is DC-like. Orientation dependence could also be used to reduce the kinetic fluctuation-induced noise when multiple detectors operate simultaneously. In addition, a cylindrical setup shields the electric field to the laboratory and encompasses the axion-induced magnetic field within the capacitor. The induced oscillating magnetic field can then be picked up by a sensitive magnetometer. Adding a superconductor ring-coil system into the scheme can further boost the sensitivity and maintain the axion dark matter inherent bandwidth. This proposed setup could be capable of wide mass range searches.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
