Dielectric Haloscopes: A New Way to Detect Axion Dark Matter
Dielectric Haloscopes: A New Way to Detect Axion Dark Matter
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DOI：
10.1103/physrevlett.118.091801
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发表时间：
2017-03-03
影响因子：
8.6
通讯作者：
Steffen, Frank
中科院分区：
文献类型：
--
作者：
Caldwell, Allen;Dvali, Gia;Steffen, Frank
我们提出了一种新策略，通过引入介电晕镜来搜索 40-400 mu eV 质量范围内的暗物质轴子，介电晕镜由放置在磁场中的介电盘组成。变化的介电介质导致轴子感应电场的不连续性，从而产生传播电磁波以满足界面处的连续性要求。距离可调的大面积圆盘可将微波信号 (10-100 GHz) 提升至可观测水平，并允许扫描较宽的轴子质量范围。当 10 T 场中包含 80 个面积为 1 m(2) 的圆盘时，对 QCD 轴子模型的敏感性是可以想象的。
We propose a new strategy to search for dark matter axions in the mass range of 40-400 mu eV by introducing dielectric haloscopes, which consist of dielectric disks placed in a magnetic field. The changing dielectric media cause discontinuities in the axion-induced electric field, leading to the generation of propagating electromagnetic waves to satisfy the continuity requirements at the interfaces. Large-area disks with adjustable distances boost the microwave signal (10-100 GHz) to an observable level and allow one to scan over a broad axion mass range. A sensitivity to QCD axion models is conceivable with 80 disks of 1 m(2) area contained in a 10 T field.